0005830: In Thunderbird + SOGo Caldav calendar, recurring event schedule is not updated as expected - SOGo | BTS

ID	Project	Category	View Status	Date Submitted	Last Update
0005830	SOGo	with SOGo	public	2023-07-20 13:41	2024-02-05 11:14

Reporter	oburais	Assigned To
Priority	normal	Severity	major	Reproducibility	always
Status	new	Resolution	open
OS	Linux	OS Version	Debian 11
Product Version	5.8.4

Summary	0005830: In Thunderbird + SOGo Caldav calendar, recurring event schedule is not updated as expected
Description	In Thunderbird, when updating the schedule of all occurrences of a recurring event (that already has a schedule exception on a single occurrence), the event is not updated for the attendees in the SOGo Calendar. As a result, the resource calendar is displaying wrong or conflicting information.
Steps To Reproduce	With Thunderbird (tested with 91 and 115) and a SOGo Caldav calendar create a recurring weekly event with a attendee (i.e. a resource) -> the event is created as expected for both the organizer and the attendee (the resource has accepted it automatically). update the schedule of a single occurrence of the event -> the event is updated as expected for both the organizer and the attendee (the resource has accepted the change automatically). update the schedule of all the occurrences of that event -> the event is updated for the organizer, but not the attendee. Moreover, the event is visible twice the day of the occurrence updated beforehand. The expected behavior is that the new schedule should be applied for the attendee as well. The attendee did receive the notice that the event was updated, but the change is not automatically accepted by the resource and can't be accepted manually either. The same event created and modified the same way through the SOGo webmail is working as expected.
Additional Information	I don't know whether it's a Thunderbird or a SOGo Caldav issue.
Tags	No tags attached.

qhivert 2023-07-20 15:13 administrator ~0017119	Hello, Is this something new or do you have this problem for quite some times? What nightly version are you using?

oburais 2023-07-20 15:27 reporter ~0017120	Hi, it's been weeks at least, had been using the 5.1.0 for years, and upgraded to 5.8.4 ( 5.8.4.20230710-1 ) lately, hoping for a solution for weird behaviors with attendees and resources on recurring events. I believe the issue has existed for long, but it took a while for the users to notice it and for us to reproduce the issue. I haven't read anything neither on SOGo nor on Thunderbird regarding this behavior, so I tried here first. Best regards.

achim71 2024-02-05 11:14 reporter ~0017552	We are also having this issue since at least last year. As an workaround i disabled offline caching in thunderbird. One employee is creating reocurring events for free appointment dates. She then modifes the text if there is an appointment. So the whole event is becoming pretty huge by the time. At some point the synchronisation stops working. System is currently running on debian bookworm with sogo 5.9.1.20240113-1.

Date Modified	Username	Field	Change
2023-07-20 13:41	oburais	New Issue
2023-07-20 15:13	qhivert	Note Added: 0017119
2023-07-20 15:27	oburais	Note Added: 0017120
2023-11-22 09:31	qhivert	Relationship added	duplicate of 0005713
2024-02-05 11:14	achim71	Note Added: 0017552