1898731 - non default (1-5) Keywords (Schlagwörter) are not synced with IMAP-Server since ciry begining of 2024

Status: RESOLVED WORKSFORME

(MailNews Core :: Networking: IMAP, defect)

Description

[Jörg]

User Agent: Mozilla/5.0 (Windows NT 6.1; Win64; x64; rv:109.0) Gecko/20100101 Firefox/115.0

Steps to reproduce:

I have circa 20 Keywords (German "Schlagwörter") defined and use it for organising my mail. I use IMAP-Servers ( of google, 1Blu, gmx and a small company). On other devices, I use this accounts with another Thunderbird Client and an independent E-Mail-Client.
Until last year, the Keywords have been shown in all Client applications and changes in one would sync to the other clients. Even a Keyword name change was synced. In 2024 this function don't work any longer.
Verison 115.11.0 (32-Bit) Window 7

Actual results:

Out of the sudden, sync of keywords didn't work any longer. Because I didn't notice it at the first glance, I cannot attribute it to a particular update.
However, working with more than one device is seriously impaired. The bug may force me to search for another E-Mail Client after 10+ years because I now have a tablet for reading.
Bug appeared before or with the new feature showing Keywords below the folders and E-Mail accounts.

Expected results:

The keyword should sync via IMAP. I think they are conveyed as "tags" in the mail header, but I am not sure.

Comment 1

[Magnus Melin [:mkmelin]]

They are not in headers, but specified as commands to the imap server.
Is it the same for all your servers? All servers do not support custom keywords.

Comment 2

[Jörg]

Yes, it was the same for all servers.
When I checked it a moment ago, it worked again, but only with another client, Essential-PIM, which could read the keywords generated with Thunderbird and show them as tags. This works the other way round too, but changing the name of a keyword is not reliably transferred.
Thunderbird on Windows 11 shows only the first 5 Keywords. When I change one of these on Win 7 it is changes on Win 11.

Thank you for your time.
After the EPIM Client failed, I installed Thunderbird on Win 11 Tablet, so I didn't notice that it worked again.

So this report can be closed or deleted.