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IDProjectCategoryView StatusDate SubmittedLast Update
0006167SOGowith SOGopublic2025-12-30 09:412026-08-16 01:48
Reportercdmon Assigned Toqhivert  
PriorityhighSeveritycrashReproducibilityalways
Status assignedResolutionopen 
Platform[Server] LinuxOSUbuntuOS Version16.04 LTS
Product Version5.12.4 
Summary0006167: Email preview fails when message contains more than 250 embedded HTML tags
Description

Symptoms:

  • Email preview does not render/display correctly
  • No errors are shown in the logs
  • The email displays correctly when opened in edit mode
  • Other email clients (Thunderbird, Roundcube) display the same emails correctly in preview mode
Steps To Reproduce

Steps to reproduce:

  • Receive or open an email containing more than 250 HTML tags
  • Attempt to view the email in preview mode
  • Preview fails to display the content properly
Additional Information

We suspect this issue is related to the ng-sanitize library used in the frontend, which may be imposing a limitation or experiencing performance issues when processing messages with a high number of HTML tags.

Tagshtml, preview, sogo, tags

Activities

qhivert

qhivert

2025-12-30 11:27

administrator   ~0018395

Hello,

Could you give me an html file that triggers the bug (you can test it on https://demo.sogo.nu user: sogo1, sogo2 or sogo3; password: sogo)?
I've just tested it with this file that has way more than 250 tags and it works well.

sample_html_file.html (38,786 bytes)    
<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Sample HTML File with 250+ Tags</title>
    <style>
        body { font-family: Arial, sans-serif; }
        table { border-collapse: collapse; width: 100%; }
        th, td { border: 1px solid #dddddd; text-align: left; padding: 8px; }
        th { background-color: #f2f2f2; }
    </style>
</head>
<body>
    <header>
        <h1>Main Heading</h1>
        <nav>
            <ul>
                <li><a href="#home">Home</a></li>
                <li><a href="#about">About</a></li>
                <li><a href="#services">Services</a></li>
                <li><a href="#contact">Contact</a></li>
            </ul>
        </nav>
    </header>
    <main>
        <section id="home">
            <h2>Home Section</h2>
            <p>Welcome to the home section. This is a sample paragraph.</p>
            <p>Another paragraph to add more tags.</p>
            <img src="#" alt="Sample Image">
            <ul>
                <li>Item 1</li>
                <li>Item 2</li>
                <li>Item 3</li>
                <li>Item 4</li>
                <li>Item 5</li>
            </ul>
            <ol>
                <li>First</li>
                <li>Second</li>
                <li>Third</li>
                <li>Fourth</li>
                <li>Fifth</li>
            </ol>
        </section>
        <section id="about">
            <h2>About Section</h2>
            <p>This section contains information about us.</p>
            <table>
                <thead>
                    <tr>
                        <th>Name</th>
                        <th>Age</th>
                        <th>Occupation</th>
                    </tr>
                </thead>
                <tbody>
                    <tr>
                        <td>John Doe</td>
                        <td>30</td>
                        <td>Developer</td>
                    </tr>
                    <tr>
                        <td>Jane Smith</td>
                        <td>25</td>
                        <td>Designer</td>
                    </tr>
                    <tr>
                        <td>Bob Johnson</td>
                        <td>40</td>
                        <td>Manager</td>
                    </tr>
                </tbody>
            </table>
        </section>
        <section id="services">
            <h2>Services Section</h2>
            <p>We offer a variety of services.</p>
            <div>
                <h3>Service 1</h3>
                <p>Details about service 1.</p>
            </div>
            <div>
                <h3>Service 2</h3>
                <p>Details about service 2.</p>
            </div>
            <div>
                <h3>Service 3</h3>
                <p>Details about service 3.</p>
            </div>
        </section>
        <section id="contact">
            <h2>Contact Section</h2>
            <form action="#" method="post">
                <label for="name">Name:</label>
                <input type="text" id="name" name="name"><br><br>
                <label for="email">Email:</label>
                <input type="email" id="email" name="email"><br><br>
                <label for="message">Message:</label><br>
                <textarea id="message" name="message" rows="4" cols="50"></textarea><br><br>
                <input type="submit" value="Submit">
            </form>
        </section>
    </main>
    <footer>
        <p>&copy; 2025 Sample HTML File. All rights reserved.</p>
        <address>
            Contact us at <a href="mailto:info@example.com">info@example.com</a>
        </address>
    </footer>
    <!-- Adding more tags to reach 250+ -->
    <div>
        <p>Additional paragraph 1</p>
        <p>Additional paragraph 2</p>
        <p>Additional paragraph 3</p>
        <p>Additional paragraph 4</p>
        <p>Additional paragraph 5</p>
        <p>Additional paragraph 6</p>
        <p>Additional paragraph 7</p>
        <p>Additional paragraph 8</p>
        <p>Additional paragraph 9</p>
        <p>Additional paragraph 10</p>
        <p>Additional paragraph 11</p>
        <p>Additional paragraph 12</p>
        <p>Additional paragraph 13</p>
        <p>Additional paragraph 14</p>
        <p>Additional paragraph 15</p>
        <p>Additional paragraph 16</p>
        <p>Additional paragraph 17</p>
        <p>Additional paragraph 18</p>
        <p>Additional paragraph 19</p>
        <p>Additional paragraph 20</p>
        <p>Additional paragraph 21</p>
        <p>Additional paragraph 22</p>
        <p>Additional paragraph 23</p>
        <p>Additional paragraph 24</p>
        <p>Additional paragraph 25</p>
        <p>Additional paragraph 26</p>
        <p>Additional paragraph 27</p>
        <p>Additional paragraph 28</p>
        <p>Additional paragraph 29</p>
        <p>Additional paragraph 30</p>
        <p>Additional paragraph 31</p>
        <p>Additional paragraph 32</p>
        <p>Additional paragraph 33</p>
        <p>Additional paragraph 34</p>
        <p>Additional paragraph 35</p>
        <p>Additional paragraph 36</p>
        <p>Additional paragraph 37</p>
        <p>Additional paragraph 38</p>
        <p>Additional paragraph 39</p>
        <p>Additional paragraph 40</p>
        <p>Additional paragraph 41</p>
        <p>Additional paragraph 42</p>
        <p>Additional paragraph 43</p>
        <p>Additional paragraph 44</p>
        <p>Additional paragraph 45</p>
        <p>Additional paragraph 46</p>
        <p>Additional paragraph 47</p>
        <p>Additional paragraph 48</p>
        <p>Additional paragraph 49</p>
        <p>Additional paragraph 50</p>
		        <p>Additional paragraph 1</p>
        <p>Additional paragraph 2</p>
        <p>Additional paragraph 3</p>
        <p>Additional paragraph 4</p>
        <p>Additional paragraph 5</p>
        <p>Additional paragraph 6</p>
        <p>Additional paragraph 7</p>
        <p>Additional paragraph 8</p>
        <p>Additional paragraph 9</p>
        <p>Additional paragraph 10</p>
        <p>Additional paragraph 11</p>
        <p>Additional paragraph 12</p>
        <p>Additional paragraph 13</p>
        <p>Additional paragraph 14</p>
        <p>Additional paragraph 15</p>
        <p>Additional paragraph 16</p>
        <p>Additional paragraph 17</p>
        <p>Additional paragraph 18</p>
        <p>Additional paragraph 19</p>
        <p>Additional paragraph 20</p>
        <p>Additional paragraph 21</p>
        <p>Additional paragraph 22</p>
        <p>Additional paragraph 23</p>
        <p>Additional paragraph 24</p>
        <p>Additional paragraph 25</p>
        <p>Additional paragraph 26</p>
        <p>Additional paragraph 27</p>
        <p>Additional paragraph 28</p>
        <p>Additional paragraph 29</p>
        <p>Additional paragraph 30</p>
        <p>Additional paragraph 31</p>
        <p>Additional paragraph 32</p>
        <p>Additional paragraph 33</p>
        <p>Additional paragraph 34</p>
        <p>Additional paragraph 35</p>
        <p>Additional paragraph 36</p>
        <p>Additional paragraph 37</p>
        <p>Additional paragraph 38</p>
        <p>Additional paragraph 39</p>
        <p>Additional paragraph 40</p>
        <p>Additional paragraph 41</p>
        <p>Additional paragraph 42</p>
        <p>Additional paragraph 43</p>
        <p>Additional paragraph 44</p>
        <p>Additional paragraph 45</p>
        <p>Additional paragraph 46</p>
        <p>Additional paragraph 47</p>
        <p>Additional paragraph 48</p>
        <p>Additional paragraph 49</p>
        <p>Additional paragraph 50</p>
		        <p>Additional paragraph 1</p>
        <p>Additional paragraph 2</p>
        <p>Additional paragraph 3</p>
        <p>Additional paragraph 4</p>
        <p>Additional paragraph 5</p>
        <p>Additional paragraph 6</p>
        <p>Additional paragraph 7</p>
        <p>Additional paragraph 8</p>
        <p>Additional paragraph 9</p>
        <p>Additional paragraph 10</p>
        <p>Additional paragraph 11</p>
        <p>Additional paragraph 12</p>
        <p>Additional paragraph 13</p>
        <p>Additional paragraph 14</p>
        <p>Additional paragraph 15</p>
        <p>Additional paragraph 16</p>
        <p>Additional paragraph 17</p>
        <p>Additional paragraph 18</p>
        <p>Additional paragraph 19</p>
        <p>Additional paragraph 20</p>
        <p>Additional paragraph 21</p>
        <p>Additional paragraph 22</p>
        <p>Additional paragraph 23</p>
        <p>Additional paragraph 24</p>
        <p>Additional paragraph 25</p>
        <p>Additional paragraph 26</p>
        <p>Additional paragraph 27</p>
        <p>Additional paragraph 28</p>
        <p>Additional paragraph 29</p>
        <p>Additional paragraph 30</p>
        <p>Additional paragraph 31</p>
        <p>Additional paragraph 32</p>
        <p>Additional paragraph 33</p>
        <p>Additional paragraph 34</p>
        <p>Additional paragraph 35</p>
        <p>Additional paragraph 36</p>
        <p>Additional paragraph 37</p>
        <p>Additional paragraph 38</p>
        <p>Additional paragraph 39</p>
        <p>Additional paragraph 40</p>
        <p>Additional paragraph 41</p>
        <p>Additional paragraph 42</p>
        <p>Additional paragraph 43</p>
        <p>Additional paragraph 44</p>
        <p>Additional paragraph 45</p>
        <p>Additional paragraph 46</p>
        <p>Additional paragraph 47</p>
        <p>Additional paragraph 48</p>
        <p>Additional paragraph 49</p>
        <p>Additional paragraph 50</p>
		        <p>Additional paragraph 1</p>
        <p>Additional paragraph 2</p>
        <p>Additional paragraph 3</p>
        <p>Additional paragraph 4</p>
        <p>Additional paragraph 5</p>
        <p>Additional paragraph 6</p>
        <p>Additional paragraph 7</p>
        <p>Additional paragraph 8</p>
        <p>Additional paragraph 9</p>
        <p>Additional paragraph 10</p>
        <p>Additional paragraph 11</p>
        <p>Additional paragraph 12</p>
        <p>Additional paragraph 13</p>
        <p>Additional paragraph 14</p>
        <p>Additional paragraph 15</p>
        <p>Additional paragraph 16</p>
        <p>Additional paragraph 17</p>
        <p>Additional paragraph 18</p>
        <p>Additional paragraph 19</p>
        <p>Additional paragraph 20</p>
        <p>Additional paragraph 21</p>
        <p>Additional paragraph 22</p>
        <p>Additional paragraph 23</p>
        <p>Additional paragraph 24</p>
        <p>Additional paragraph 25</p>
        <p>Additional paragraph 26</p>
        <p>Additional paragraph 27</p>
        <p>Additional paragraph 28</p>
        <p>Additional paragraph 29</p>
        <p>Additional paragraph 30</p>
        <p>Additional paragraph 31</p>
        <p>Additional paragraph 32</p>
        <p>Additional paragraph 33</p>
        <p>Additional paragraph 34</p>
        <p>Additional paragraph 35</p>
        <p>Additional paragraph 36</p>
        <p>Additional paragraph 37</p>
        <p>Additional paragraph 38</p>
        <p>Additional paragraph 39</p>
        <p>Additional paragraph 40</p>
        <p>Additional paragraph 41</p>
        <p>Additional paragraph 42</p>
        <p>Additional paragraph 43</p>
        <p>Additional paragraph 44</p>
        <p>Additional paragraph 45</p>
        <p>Additional paragraph 46</p>
        <p>Additional paragraph 47</p>
        <p>Additional paragraph 48</p>
        <p>Additional paragraph 49</p>
        <p>Additional paragraph 50</p>
		        <p>Additional paragraph 1</p>
        <p>Additional paragraph 2</p>
        <p>Additional paragraph 3</p>
        <p>Additional paragraph 4</p>
        <p>Additional paragraph 5</p>
        <p>Additional paragraph 6</p>
        <p>Additional paragraph 7</p>
        <p>Additional paragraph 8</p>
        <p>Additional paragraph 9</p>
        <p>Additional paragraph 10</p>
        <p>Additional paragraph 11</p>
        <p>Additional paragraph 12</p>
        <p>Additional paragraph 13</p>
        <p>Additional paragraph 14</p>
        <p>Additional paragraph 15</p>
        <p>Additional paragraph 16</p>
        <p>Additional paragraph 17</p>
        <p>Additional paragraph 18</p>
        <p>Additional paragraph 19</p>
        <p>Additional paragraph 20</p>
        <p>Additional paragraph 21</p>
        <p>Additional paragraph 22</p>
        <p>Additional paragraph 23</p>
        <p>Additional paragraph 24</p>
        <p>Additional paragraph 25</p>
        <p>Additional paragraph 26</p>
        <p>Additional paragraph 27</p>
        <p>Additional paragraph 28</p>
        <p>Additional paragraph 29</p>
        <p>Additional paragraph 30</p>
        <p>Additional paragraph 31</p>
        <p>Additional paragraph 32</p>
        <p>Additional paragraph 33</p>
        <p>Additional paragraph 34</p>
        <p>Additional paragraph 35</p>
        <p>Additional paragraph 36</p>
        <p>Additional paragraph 37</p>
        <p>Additional paragraph 38</p>
        <p>Additional paragraph 39</p>
        <p>Additional paragraph 40</p>
        <p>Additional paragraph 41</p>
        <p>Additional paragraph 42</p>
        <p>Additional paragraph 43</p>
        <p>Additional paragraph 44</p>
        <p>Additional paragraph 45</p>
        <p>Additional paragraph 46</p>
        <p>Additional paragraph 47</p>
        <p>Additional paragraph 48</p>
        <p>Additional paragraph 49</p>
        <p>Additional paragraph 50</p>
		        <p>Additional paragraph 1</p>
        <p>Additional paragraph 2</p>
        <p>Additional paragraph 3</p>
        <p>Additional paragraph 4</p>
        <p>Additional paragraph 5</p>
        <p>Additional paragraph 6</p>
        <p>Additional paragraph 7</p>
        <p>Additional paragraph 8</p>
        <p>Additional paragraph 9</p>
        <p>Additional paragraph 10</p>
        <p>Additional paragraph 11</p>
        <p>Additional paragraph 12</p>
        <p>Additional paragraph 13</p>
        <p>Additional paragraph 14</p>
        <p>Additional paragraph 15</p>
        <p>Additional paragraph 16</p>
        <p>Additional paragraph 17</p>
        <p>Additional paragraph 18</p>
        <p>Additional paragraph 19</p>
        <p>Additional paragraph 20</p>
        <p>Additional paragraph 21</p>
        <p>Additional paragraph 22</p>
        <p>Additional paragraph 23</p>
        <p>Additional paragraph 24</p>
        <p>Additional paragraph 25</p>
        <p>Additional paragraph 26</p>
        <p>Additional paragraph 27</p>
        <p>Additional paragraph 28</p>
        <p>Additional paragraph 29</p>
        <p>Additional paragraph 30</p>
        <p>Additional paragraph 31</p>
        <p>Additional paragraph 32</p>
        <p>Additional paragraph 33</p>
        <p>Additional paragraph 34</p>
        <p>Additional paragraph 35</p>
        <p>Additional paragraph 36</p>
        <p>Additional paragraph 37</p>
        <p>Additional paragraph 38</p>
        <p>Additional paragraph 39</p>
        <p>Additional paragraph 40</p>
        <p>Additional paragraph 41</p>
        <p>Additional paragraph 42</p>
        <p>Additional paragraph 43</p>
        <p>Additional paragraph 44</p>
        <p>Additional paragraph 45</p>
        <p>Additional paragraph 46</p>
        <p>Additional paragraph 47</p>
        <p>Additional paragraph 48</p>
        <p>Additional paragraph 49</p>
        <p>Additional paragraph 50</p>        <p>Additional paragraph 1</p>
        <p>Additional paragraph 2</p>
        <p>Additional paragraph 3</p>
        <p>Additional paragraph 4</p>
        <p>Additional paragraph 5</p>
        <p>Additional paragraph 6</p>
        <p>Additional paragraph 7</p>
        <p>Additional paragraph 8</p>
        <p>Additional paragraph 9</p>
        <p>Additional paragraph 10</p>
        <p>Additional paragraph 11</p>
        <p>Additional paragraph 12</p>
        <p>Additional paragraph 13</p>
        <p>Additional paragraph 14</p>
        <p>Additional paragraph 15</p>
        <p>Additional paragraph 16</p>
        <p>Additional paragraph 17</p>
        <p>Additional paragraph 18</p>
        <p>Additional paragraph 19</p>
        <p>Additional paragraph 20</p>
        <p>Additional paragraph 21</p>
        <p>Additional paragraph 22</p>
        <p>Additional paragraph 23</p>
        <p>Additional paragraph 24</p>
        <p>Additional paragraph 25</p>
        <p>Additional paragraph 26</p>
        <p>Additional paragraph 27</p>
        <p>Additional paragraph 28</p>
        <p>Additional paragraph 29</p>
        <p>Additional paragraph 30</p>
        <p>Additional paragraph 31</p>
        <p>Additional paragraph 32</p>
        <p>Additional paragraph 33</p>
        <p>Additional paragraph 34</p>
        <p>Additional paragraph 35</p>
        <p>Additional paragraph 36</p>
        <p>Additional paragraph 37</p>
        <p>Additional paragraph 38</p>
        <p>Additional paragraph 39</p>
        <p>Additional paragraph 40</p>
        <p>Additional paragraph 41</p>
        <p>Additional paragraph 42</p>
        <p>Additional paragraph 43</p>
        <p>Additional paragraph 44</p>
        <p>Additional paragraph 45</p>
        <p>Additional paragraph 46</p>
        <p>Additional paragraph 47</p>
        <p>Additional paragraph 48</p>
        <p>Additional paragraph 49</p>
        <p>Additional paragraph 50</p>
		        <p>Additional paragraph 1</p>
        <p>Additional paragraph 2</p>
        <p>Additional paragraph 3</p>
        <p>Additional paragraph 4</p>
        <p>Additional paragraph 5</p>
        <p>Additional paragraph 6</p>
        <p>Additional paragraph 7</p>
        <p>Additional paragraph 8</p>
        <p>Additional paragraph 9</p>
        <p>Additional paragraph 10</p>
        <p>Additional paragraph 11</p>
        <p>Additional paragraph 12</p>
        <p>Additional paragraph 13</p>
        <p>Additional paragraph 14</p>
        <p>Additional paragraph 15</p>
        <p>Additional paragraph 16</p>
        <p>Additional paragraph 17</p>
        <p>Additional paragraph 18</p>
        <p>Additional paragraph 19</p>
        <p>Additional paragraph 20</p>
        <p>Additional paragraph 21</p>
        <p>Additional paragraph 22</p>
        <p>Additional paragraph 23</p>
        <p>Additional paragraph 24</p>
        <p>Additional paragraph 25</p>
        <p>Additional paragraph 26</p>
        <p>Additional paragraph 27</p>
        <p>Additional paragraph 28</p>
        <p>Additional paragraph 29</p>
        <p>Additional paragraph 30</p>
        <p>Additional paragraph 31</p>
        <p>Additional paragraph 32</p>
        <p>Additional paragraph 33</p>
        <p>Additional paragraph 34</p>
        <p>Additional paragraph 35</p>
        <p>Additional paragraph 36</p>
        <p>Additional paragraph 37</p>
        <p>Additional paragraph 38</p>
        <p>Additional paragraph 39</p>
        <p>Additional paragraph 40</p>
        <p>Additional paragraph 41</p>
        <p>Additional paragraph 42</p>
        <p>Additional paragraph 43</p>
        <p>Additional paragraph 44</p>
        <p>Additional paragraph 45</p>
        <p>Additional paragraph 46</p>
        <p>Additional paragraph 47</p>
        <p>Additional paragraph 48</p>
        <p>Additional paragraph 49</p>
        <p>Additional paragraph 50</p>
		        <p>Additional paragraph 1</p>
        <p>Additional paragraph 2</p>
        <p>Additional paragraph 3</p>
        <p>Additional paragraph 4</p>
        <p>Additional paragraph 5</p>
        <p>Additional paragraph 6</p>
        <p>Additional paragraph 7</p>
        <p>Additional paragraph 8</p>
        <p>Additional paragraph 9</p>
        <p>Additional paragraph 10</p>
        <p>Additional paragraph 11</p>
        <p>Additional paragraph 12</p>
        <p>Additional paragraph 13</p>
        <p>Additional paragraph 14</p>
        <p>Additional paragraph 15</p>
        <p>Additional paragraph 16</p>
        <p>Additional paragraph 17</p>
        <p>Additional paragraph 18</p>
        <p>Additional paragraph 19</p>
        <p>Additional paragraph 20</p>
        <p>Additional paragraph 21</p>
        <p>Additional paragraph 22</p>
        <p>Additional paragraph 23</p>
        <p>Additional paragraph 24</p>
        <p>Additional paragraph 25</p>
        <p>Additional paragraph 26</p>
        <p>Additional paragraph 27</p>
        <p>Additional paragraph 28</p>
        <p>Additional paragraph 29</p>
        <p>Additional paragraph 30</p>
        <p>Additional paragraph 31</p>
        <p>Additional paragraph 32</p>
        <p>Additional paragraph 33</p>
        <p>Additional paragraph 34</p>
        <p>Additional paragraph 35</p>
        <p>Additional paragraph 36</p>
        <p>Additional paragraph 37</p>
        <p>Additional paragraph 38</p>
        <p>Additional paragraph 39</p>
        <p>Additional paragraph 40</p>
        <p>Additional paragraph 41</p>
        <p>Additional paragraph 42</p>
        <p>Additional paragraph 43</p>
        <p>Additional paragraph 44</p>
        <p>Additional paragraph 45</p>
        <p>Additional paragraph 46</p>
        <p>Additional paragraph 47</p>
        <p>Additional paragraph 48</p>
        <p>Additional paragraph 49</p>
        <p>Additional paragraph 50</p>
		        <p>Additional paragraph 1</p>
        <p>Additional paragraph 2</p>
        <p>Additional paragraph 3</p>
        <p>Additional paragraph 4</p>
        <p>Additional paragraph 5</p>
        <p>Additional paragraph 6</p>
        <p>Additional paragraph 7</p>
        <p>Additional paragraph 8</p>
        <p>Additional paragraph 9</p>
        <p>Additional paragraph 10</p>
        <p>Additional paragraph 11</p>
        <p>Additional paragraph 12</p>
        <p>Additional paragraph 13</p>
        <p>Additional paragraph 14</p>
        <p>Additional paragraph 15</p>
        <p>Additional paragraph 16</p>
        <p>Additional paragraph 17</p>
        <p>Additional paragraph 18</p>
        <p>Additional paragraph 19</p>
        <p>Additional paragraph 20</p>
        <p>Additional paragraph 21</p>
        <p>Additional paragraph 22</p>
        <p>Additional paragraph 23</p>
        <p>Additional paragraph 24</p>
        <p>Additional paragraph 25</p>
        <p>Additional paragraph 26</p>
        <p>Additional paragraph 27</p>
        <p>Additional paragraph 28</p>
        <p>Additional paragraph 29</p>
        <p>Additional paragraph 30</p>
        <p>Additional paragraph 31</p>
        <p>Additional paragraph 32</p>
        <p>Additional paragraph 33</p>
        <p>Additional paragraph 34</p>
        <p>Additional paragraph 35</p>
        <p>Additional paragraph 36</p>
        <p>Additional paragraph 37</p>
        <p>Additional paragraph 38</p>
        <p>Additional paragraph 39</p>
        <p>Additional paragraph 40</p>
        <p>Additional paragraph 41</p>
        <p>Additional paragraph 42</p>
        <p>Additional paragraph 43</p>
        <p>Additional paragraph 44</p>
        <p>Additional paragraph 45</p>
        <p>Additional paragraph 46</p>
        <p>Additional paragraph 47</p>
        <p>Additional paragraph 48</p>
        <p>Additional paragraph 49</p>
        <p>Additional paragraph 50</p>
		        <p>Additional paragraph 1</p>
        <p>Additional paragraph 2</p>
        <p>Additional paragraph 3</p>
        <p>Additional paragraph 4</p>
        <p>Additional paragraph 5</p>
        <p>Additional paragraph 6</p>
        <p>Additional paragraph 7</p>
        <p>Additional paragraph 8</p>
        <p>Additional paragraph 9</p>
        <p>Additional paragraph 10</p>
        <p>Additional paragraph 11</p>
        <p>Additional paragraph 12</p>
        <p>Additional paragraph 13</p>
        <p>Additional paragraph 14</p>
        <p>Additional paragraph 15</p>
        <p>Additional paragraph 16</p>
        <p>Additional paragraph 17</p>
        <p>Additional paragraph 18</p>
        <p>Additional paragraph 19</p>
        <p>Additional paragraph 20</p>
        <p>Additional paragraph 21</p>
        <p>Additional paragraph 22</p>
        <p>Additional paragraph 23</p>
        <p>Additional paragraph 24</p>
        <p>Additional paragraph 25</p>
        <p>Additional paragraph 26</p>
        <p>Additional paragraph 27</p>
        <p>Additional paragraph 28</p>
        <p>Additional paragraph 29</p>
        <p>Additional paragraph 30</p>
        <p>Additional paragraph 31</p>
        <p>Additional paragraph 32</p>
        <p>Additional paragraph 33</p>
        <p>Additional paragraph 34</p>
        <p>Additional paragraph 35</p>
        <p>Additional paragraph 36</p>
        <p>Additional paragraph 37</p>
        <p>Additional paragraph 38</p>
        <p>Additional paragraph 39</p>
        <p>Additional paragraph 40</p>
        <p>Additional paragraph 41</p>
        <p>Additional paragraph 42</p>
        <p>Additional paragraph 43</p>
        <p>Additional paragraph 44</p>
        <p>Additional paragraph 45</p>
        <p>Additional paragraph 46</p>
        <p>Additional paragraph 47</p>
        <p>Additional paragraph 48</p>
        <p>Additional paragraph 49</p>
        <p>Additional paragraph 50</p>
		        <p>Additional paragraph 1</p>
        <p>Additional paragraph 2</p>
        <p>Additional paragraph 3</p>
        <p>Additional paragraph 4</p>
        <p>Additional paragraph 5</p>
        <p>Additional paragraph 6</p>
        <p>Additional paragraph 7</p>
        <p>Additional paragraph 8</p>
        <p>Additional paragraph 9</p>
        <p>Additional paragraph 10</p>
        <p>Additional paragraph 11</p>
        <p>Additional paragraph 12</p>
        <p>Additional paragraph 13</p>
        <p>Additional paragraph 14</p>
        <p>Additional paragraph 15</p>
        <p>Additional paragraph 16</p>
        <p>Additional paragraph 17</p>
        <p>Additional paragraph 18</p>
        <p>Additional paragraph 19</p>
        <p>Additional paragraph 20</p>
        <p>Additional paragraph 21</p>
        <p>Additional paragraph 22</p>
        <p>Additional paragraph 23</p>
        <p>Additional paragraph 24</p>
        <p>Additional paragraph 25</p>
        <p>Additional paragraph 26</p>
        <p>Additional paragraph 27</p>
        <p>Additional paragraph 28</p>
        <p>Additional paragraph 29</p>
        <p>Additional paragraph 30</p>
        <p>Additional paragraph 31</p>
        <p>Additional paragraph 32</p>
        <p>Additional paragraph 33</p>
        <p>Additional paragraph 34</p>
        <p>Additional paragraph 35</p>
        <p>Additional paragraph 36</p>
        <p>Additional paragraph 37</p>
        <p>Additional paragraph 38</p>
        <p>Additional paragraph 39</p>
        <p>Additional paragraph 40</p>
        <p>Additional paragraph 41</p>
        <p>Additional paragraph 42</p>
        <p>Additional paragraph 43</p>
        <p>Additional paragraph 44</p>
        <p>Additional paragraph 45</p>
        <p>Additional paragraph 46</p>
        <p>Additional paragraph 47</p>
        <p>Additional paragraph 48</p>
        <p>Additional paragraph 49</p>
        <p>Additional paragraph 50</p>
		        <p>Additional paragraph 1</p>
        <p>Additional paragraph 2</p>
        <p>Additional paragraph 3</p>
        <p>Additional paragraph 4</p>
        <p>Additional paragraph 5</p>
        <p>Additional paragraph 6</p>
        <p>Additional paragraph 7</p>
        <p>Additional paragraph 8</p>
        <p>Additional paragraph 9</p>
        <p>Additional paragraph 10</p>
        <p>Additional paragraph 11</p>
        <p>Additional paragraph 12</p>
        <p>Additional paragraph 13</p>
        <p>Additional paragraph 14</p>
        <p>Additional paragraph 15</p>
        <p>Additional paragraph 16</p>
        <p>Additional paragraph 17</p>
        <p>Additional paragraph 18</p>
        <p>Additional paragraph 19</p>
        <p>Additional paragraph 20</p>
        <p>Additional paragraph 21</p>
        <p>Additional paragraph 22</p>
        <p>Additional paragraph 23</p>
        <p>Additional paragraph 24</p>
        <p>Additional paragraph 25</p>
        <p>Additional paragraph 26</p>
        <p>Additional paragraph 27</p>
        <p>Additional paragraph 28</p>
        <p>Additional paragraph 29</p>
        <p>Additional paragraph 30</p>
        <p>Additional paragraph 31</p>
        <p>Additional paragraph 32</p>
        <p>Additional paragraph 33</p>
        <p>Additional paragraph 34</p>
        <p>Additional paragraph 35</p>
        <p>Additional paragraph 36</p>
        <p>Additional paragraph 37</p>
        <p>Additional paragraph 38</p>
        <p>Additional paragraph 39</p>
        <p>Additional paragraph 40</p>
        <p>Additional paragraph 41</p>
        <p>Additional paragraph 42</p>
        <p>Additional paragraph 43</p>
        <p>Additional paragraph 44</p>
        <p>Additional paragraph 45</p>
        <p>Additional paragraph 46</p>
        <p>Additional paragraph 47</p>
        <p>Additional paragraph 48</p>
        <p>Additional paragraph 49</p>
        <p>Additional paragraph 50</p>
		        <p>Additional paragraph 1</p>
        <p>Additional paragraph 2</p>
        <p>Additional paragraph 3</p>
        <p>Additional paragraph 4</p>
        <p>Additional paragraph 5</p>
        <p>Additional paragraph 6</p>
        <p>Additional paragraph 7</p>
        <p>Additional paragraph 8</p>
        <p>Additional paragraph 9</p>
        <p>Additional paragraph 10</p>
        <p>Additional paragraph 11</p>
        <p>Additional paragraph 12</p>
        <p>Additional paragraph 13</p>
        <p>Additional paragraph 14</p>
        <p>Additional paragraph 15</p>
        <p>Additional paragraph 16</p>
        <p>Additional paragraph 17</p>
        <p>Additional paragraph 18</p>
        <p>Additional paragraph 19</p>
        <p>Additional paragraph 20</p>
        <p>Additional paragraph 21</p>
        <p>Additional paragraph 22</p>
        <p>Additional paragraph 23</p>
        <p>Additional paragraph 24</p>
        <p>Additional paragraph 25</p>
        <p>Additional paragraph 26</p>
        <p>Additional paragraph 27</p>
        <p>Additional paragraph 28</p>
        <p>Additional paragraph 29</p>
        <p>Additional paragraph 30</p>
        <p>Additional paragraph 31</p>
        <p>Additional paragraph 32</p>
        <p>Additional paragraph 33</p>
        <p>Additional paragraph 34</p>
        <p>Additional paragraph 35</p>
        <p>Additional paragraph 36</p>
        <p>Additional paragraph 37</p>
        <p>Additional paragraph 38</p>
        <p>Additional paragraph 39</p>
        <p>Additional paragraph 40</p>
        <p>Additional paragraph 41</p>
        <p>Additional paragraph 42</p>
        <p>Additional paragraph 43</p>
        <p>Additional paragraph 44</p>
        <p>Additional paragraph 45</p>
        <p>Additional paragraph 46</p>
        <p>Additional paragraph 47</p>
        <p>Additional paragraph 48</p>
        <p>Additional paragraph 49</p>
        <p>Additional paragraph 50</p>
		        <p>Additional paragraph 1</p>
        <p>Additional paragraph 2</p>
        <p>Additional paragraph 3</p>
        <p>Additional paragraph 4</p>
        <p>Additional paragraph 5</p>
        <p>Additional paragraph 6</p>
        <p>Additional paragraph 7</p>
        <p>Additional paragraph 8</p>
        <p>Additional paragraph 9</p>
        <p>Additional paragraph 10</p>
        <p>Additional paragraph 11</p>
        <p>Additional paragraph 12</p>
        <p>Additional paragraph 13</p>
        <p>Additional paragraph 14</p>
        <p>Additional paragraph 15</p>
        <p>Additional paragraph 16</p>
        <p>Additional paragraph 17</p>
        <p>Additional paragraph 18</p>
        <p>Additional paragraph 19</p>
        <p>Additional paragraph 20</p>
        <p>Additional paragraph 21</p>
        <p>Additional paragraph 22</p>
        <p>Additional paragraph 23</p>
        <p>Additional paragraph 24</p>
        <p>Additional paragraph 25</p>
        <p>Additional paragraph 26</p>
        <p>Additional paragraph 27</p>
        <p>Additional paragraph 28</p>
        <p>Additional paragraph 29</p>
        <p>Additional paragraph 30</p>
        <p>Additional paragraph 31</p>
        <p>Additional paragraph 32</p>
        <p>Additional paragraph 33</p>
        <p>Additional paragraph 34</p>
        <p>Additional paragraph 35</p>
        <p>Additional paragraph 36</p>
        <p>Additional paragraph 37</p>
        <p>Additional paragraph 38</p>
        <p>Additional paragraph 39</p>
        <p>Additional paragraph 40</p>
        <p>Additional paragraph 41</p>
        <p>Additional paragraph 42</p>
        <p>Additional paragraph 43</p>
        <p>Additional paragraph 44</p>
        <p>Additional paragraph 45</p>
        <p>Additional paragraph 46</p>
        <p>Additional paragraph 47</p>
        <p>Additional paragraph 48</p>
        <p>Additional paragraph 49</p>
        <p>Additional paragraph 50</p>
		        <p>Additional paragraph 1</p>
        <p>Additional paragraph 2</p>
        <p>Additional paragraph 3</p>
        <p>Additional paragraph 4</p>
        <p>Additional paragraph 5</p>
        <p>Additional paragraph 6</p>
        <p>Additional paragraph 7</p>
        <p>Additional paragraph 8</p>
        <p>Additional paragraph 9</p>
        <p>Additional paragraph 10</p>
        <p>Additional paragraph 11</p>
        <p>Additional paragraph 12</p>
        <p>Additional paragraph 13</p>
        <p>Additional paragraph 14</p>
        <p>Additional paragraph 15</p>
        <p>Additional paragraph 16</p>
        <p>Additional paragraph 17</p>
        <p>Additional paragraph 18</p>
        <p>Additional paragraph 19</p>
        <p>Additional paragraph 20</p>
        <p>Additional paragraph 21</p>
        <p>Additional paragraph 22</p>
        <p>Additional paragraph 23</p>
        <p>Additional paragraph 24</p>
        <p>Additional paragraph 25</p>
        <p>Additional paragraph 26</p>
        <p>Additional paragraph 27</p>
        <p>Additional paragraph 28</p>
        <p>Additional paragraph 29</p>
        <p>Additional paragraph 30</p>
        <p>Additional paragraph 31</p>
        <p>Additional paragraph 32</p>
        <p>Additional paragraph 33</p>
        <p>Additional paragraph 34</p>
        <p>Additional paragraph 35</p>
        <p>Additional paragraph 36</p>
        <p>Additional paragraph 37</p>
        <p>Additional paragraph 38</p>
        <p>Additional paragraph 39</p>
        <p>Additional paragraph 40</p>
        <p>Additional paragraph 41</p>
        <p>Additional paragraph 42</p>
        <p>Additional paragraph 43</p>
        <p>Additional paragraph 44</p>
        <p>Additional paragraph 45</p>
        <p>Additional paragraph 46</p>
        <p>Additional paragraph 47</p>
        <p>Additional paragraph 48</p>
        <p>Additional paragraph 49</p>
        <p>Additional paragraph 50</p>
		        <p>Additional paragraph 1</p>
        <p>Additional paragraph 2</p>
        <p>Additional paragraph 3</p>
        <p>Additional paragraph 4</p>
        <p>Additional paragraph 5</p>
        <p>Additional paragraph 6</p>
        <p>Additional paragraph 7</p>
        <p>Additional paragraph 8</p>
        <p>Additional paragraph 9</p>
        <p>Additional paragraph 10</p>
        <p>Additional paragraph 11</p>
        <p>Additional paragraph 12</p>
        <p>Additional paragraph 13</p>
        <p>Additional paragraph 14</p>
        <p>Additional paragraph 15</p>
        <p>Additional paragraph 16</p>
        <p>Additional paragraph 17</p>
        <p>Additional paragraph 18</p>
        <p>Additional paragraph 19</p>
        <p>Additional paragraph 20</p>
        <p>Additional paragraph 21</p>
        <p>Additional paragraph 22</p>
        <p>Additional paragraph 23</p>
        <p>Additional paragraph 24</p>
        <p>Additional paragraph 25</p>
        <p>Additional paragraph 26</p>
        <p>Additional paragraph 27</p>
        <p>Additional paragraph 28</p>
        <p>Additional paragraph 29</p>
        <p>Additional paragraph 30</p>
        <p>Additional paragraph 31</p>
        <p>Additional paragraph 32</p>
        <p>Additional paragraph 33</p>
        <p>Additional paragraph 34</p>
        <p>Additional paragraph 35</p>
        <p>Additional paragraph 36</p>
        <p>Additional paragraph 37</p>
        <p>Additional paragraph 38</p>
        <p>Additional paragraph 39</p>
        <p>Additional paragraph 40</p>
        <p>Additional paragraph 41</p>
        <p>Additional paragraph 42</p>
        <p>Additional paragraph 43</p>
        <p>Additional paragraph 44</p>
        <p>Additional paragraph 45</p>
        <p>Additional paragraph 46</p>
        <p>Additional paragraph 47</p>
        <p>Additional paragraph 48</p>
        <p>Additional paragraph 49</p>
        <p>Additional paragraph 50</p>
		        <p>Additional paragraph 1</p>
        <p>Additional paragraph 2</p>
        <p>Additional paragraph 3</p>
        <p>Additional paragraph 4</p>
        <p>Additional paragraph 5</p>
        <p>Additional paragraph 6</p>
        <p>Additional paragraph 7</p>
        <p>Additional paragraph 8</p>
        <p>Additional paragraph 9</p>
        <p>Additional paragraph 10</p>
        <p>Additional paragraph 11</p>
        <p>Additional paragraph 12</p>
        <p>Additional paragraph 13</p>
        <p>Additional paragraph 14</p>
        <p>Additional paragraph 15</p>
        <p>Additional paragraph 16</p>
        <p>Additional paragraph 17</p>
        <p>Additional paragraph 18</p>
        <p>Additional paragraph 19</p>
        <p>Additional paragraph 20</p>
        <p>Additional paragraph 21</p>
        <p>Additional paragraph 22</p>
        <p>Additional paragraph 23</p>
        <p>Additional paragraph 24</p>
        <p>Additional paragraph 25</p>
        <p>Additional paragraph 26</p>
        <p>Additional paragraph 27</p>
        <p>Additional paragraph 28</p>
        <p>Additional paragraph 29</p>
        <p>Additional paragraph 30</p>
        <p>Additional paragraph 31</p>
        <p>Additional paragraph 32</p>
        <p>Additional paragraph 33</p>
        <p>Additional paragraph 34</p>
        <p>Additional paragraph 35</p>
        <p>Additional paragraph 36</p>
        <p>Additional paragraph 37</p>
        <p>Additional paragraph 38</p>
        <p>Additional paragraph 39</p>
        <p>Additional paragraph 40</p>
        <p>Additional paragraph 41</p>
        <p>Additional paragraph 42</p>
        <p>Additional paragraph 43</p>
        <p>Additional paragraph 44</p>
        <p>Additional paragraph 45</p>
        <p>Additional paragraph 46</p>
        <p>Additional paragraph 47</p>
        <p>Additional paragraph 48</p>
        <p>Additional paragraph 49</p>
        <p>Additional paragraph 50</p>
    </div>
</body>
</html>
sample_html_file.html (38,786 bytes)   
cdmon

cdmon

2025-12-31 09:49

reporter   ~0018396

Hello qhivert,

We tested it with the account sogo2 and it is failing (Attached image)

You can found the mail in the Sent folder.

Currently it is failing with 255 tags or more.

PD: sogo1 is full, not space available.

image.png (70,578 bytes)   
image.png (70,578 bytes)   
Selección_2384.png (43,904 bytes)   
Selección_2384.png (43,904 bytes)   
cdmon

cdmon

2026-03-10 11:37

reporter   ~0018423

We have feedback? Do you need something?
cdmon

cdmon

2026-05-07 12:51

reporter   ~0018452

We have feedback? Do you need something?
wires

wires

2026-08-16 01:48

reporter   ~0018528

We are hitting what looks like this bug on SOGo 5.12.9 (mailcow-dockerized, SOGO_VERSION=SOGo-5.12.9), and we have a real-world message that triggers it — attached, with recipient identifiers scrubbed.

About the attachment: it is a Pinterest digest ("It's giving inspired", 1148 tags / 23 <img> / 29 downlevel-revealed conditional comments). It was exported from a mailbox rather than captured off the wire, so line endings are LF-only and there are no delivery headers from the current server; the DKIM/ARC signatures no longer validate and quoted-printable wrapping was regenerated, both because of the redaction. The HTML body is byte-identical to the original apart from the redacted identifiers. It reproduces for us as described.

Our symptoms match the original report, including that the message renders correctly in edit mode (Forward / Edit as New) but not in the reading pane, and renders correctly in other clients. In our case the failure is narrower than "preview fails": all text renders, but the large <img> elements are absent from the reading-pane DOM entirely (no broken-image placeholder, no reserved space, no image actions on right-click).

Two details that may help narrow it, since the synthetic 250-tag file did not reproduce:

A tag count alone does not seem to be the trigger. Another newsletter of comparable size and nesting depth (AWeber-generated, plenty of nested tables and images) renders perfectly in the same mailbox and browser session.
Within the failing message, the images that fail and the images that work differ structurally. The two that render (a 24x24 logo and a search icon) are plain <a><img src="https://…&quot;>&lt;/a>. The 15 that vanish are each wrapped in an Outlook downlevel-revealed conditional comment: <a …><!--[if !mso]><!--> <div …><img … src="https://…&quot;/>&lt;/div> <!--<![endif]--> <!--[if mso]><v:roundrect …><v:fill src="https://…&quot;/>&lt;/v:roundrect>&lt;![endif]-->&lt;/a> All are from the same host, so this is not remote-content blocking; the reading pane is displaying remote images (the logo appears) while the conditional-comment-wrapped ones are gone.
For what it's worth, we could not reproduce the loss with plain libxml2 (2.11.9) by parsing that markup, dropping comments, re-serializing and re-parsing — the <img> survives with src intact. That suggests looking at the SAX handler rather than the parser: possibly the void-tag ignoredContent counter in UI/MailPartViewers/UIxMailPartHTMLViewer.m around line 499, given this document is dense in self-closed void tags (<img …/> plus a <br …/> after every block).

Happy to test a patch or gather more detail — we can reproduce on demand.

sample-bug6167.eml (109,412 bytes)

Issue History

Date Modified Username Field Change
2025-12-30 09:41 cdmon New Issue
2025-12-30 09:41 cdmon Tag Attached: html
2025-12-30 09:41 cdmon Tag Attached: preview
2025-12-30 09:41 cdmon Tag Attached: sogo
2025-12-30 09:41 cdmon Tag Attached: tags
2025-12-30 11:27 qhivert Note Added: 0018395
2025-12-30 11:27 qhivert File Added: sample_html_file.html
2025-12-30 11:27 qhivert Assigned To => qhivert
2025-12-30 11:27 qhivert Status new => feedback
2025-12-31 09:49 cdmon Note Added: 0018396
2025-12-31 09:49 cdmon File Added: image.png
2025-12-31 09:49 cdmon File Added: Selección_2384.png
2025-12-31 09:49 cdmon Status feedback => assigned
2026-03-10 11:37 cdmon Note Added: 0018423
2026-05-07 12:51 cdmon Note Added: 0018452
2026-08-16 01:48 wires Note Added: 0018528
2026-08-16 01:48 wires File Added: sample-bug6167.eml