Bug 446932

Summary:	kmail downloads mail again and again from my IMAP dovecot server and fills-up local and online IMAP folders. akonadictl fsck; akonadictl vacuum; akonadictl restart did not help.
Product:	[Applications] kmail2	Reporter:	Eike Lantzsch <zp6cge>
Component:	message list	Assignee:	kdepim bugs <kdepim-bugs>
Status:	REPORTED ---
Severity:	critical
Priority:	NOR
Version:	5.18.90
Target Milestone:	---
Platform:	Debian unstable
OS:	Linux
Latest Commit:		Version Fixed In:
Sentry Crash Report:

Description Eike Lantzsch 2021-12-13 13:28:27 UTC

SUMMARY
***
NOTE: If you are reporting a crash, please try to attach a backtrace with debug symbols.
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***
Kmail2 version is actually 5.18.1 !
Kmail became unusable

STEPS TO REPRODUCE
1. local Dovecot server on same local network. Not publicly accessible
2. X11
3. kmail2 mail checkout, manually or periodocally doesn't matter what method
OBSERVED RESULT
Somehow messages are not marked as read / downloaded by kmail/akonadi on the server.

EXPECTED RESULT
mails ought to be downloaded only once

SOFTWARE/OS VERSIONS
Linux/KDE Plasma: Linux 5.14.0-3-amd64 #1 SMP Debian 5.14.12-1 (2021-10-14) x86_64 GNU/Linux; KDE 5.23.4
(available in About System)
KDE Plasma Version: 5.23.4
KDE Frameworks Version: 5.88.0 
Qt Version: 5.15.2

ADDITIONAL INFORMATION
akonadictl fsck; akonadictl vacuum; akonadictl restart did not help.
the dovecot server runs on OpenBSD 7.0 and get its mail fed by means of fetchmail
The mails on the server are only present once while kmail2 keeps presenting them as newly arrived mail ad infinitum.
This happened after an update of Debian/Sid/Bookworm which updated glibc and libc
Don't know if this has something to do with it.

Thanks for all your work!