Additional info - in another web mail software installed on this server (roundcube) this message is displayed correctly

Please attach the raw source of the message.

Raw source without some personal staff in attachment

E-Mail standard RFC2822 states
https://www.rfc-editor.org/rfc/rfc2822#section-2.2

"2.2. Header Fields

Header fields are lines composed of a field name, followed by a colon
(":"), followed by a field body, and terminated by CRLF. A field
name MUST be composed of printable US-ASCII characters (i.e.,
characters that have values between 33 and 126, inclusive), except
colon. A field body may be composed of any US-ASCII characters,
except for CR and LF. However, a field body may contain CRLF when
used in header "folding" and "unfolding" as described in section
2.2.3. All field bodies MUST conform to the syntax described in
sections 3 and 4 of this standard."

Therefore your subject is an invalid header entry exceeding the allowed character range.
In order to use such characters in your subject, you have to use some encoding.
See https://www.rfc-editor.org/rfc/rfc2047

How can i use encoding in SOGo?
Btw subject of this email displayed correctly in roundcube, which installed on same server.