Created attachment 110839 [details] Screenshot KMail, although setup properly, worked properly, is now just blank! Everything. I have IMAP, SMTP, Identity setup properly. WTF is happening with this software...
I can confirm this bad behaviour, it happen time by time but could not find out yet the reason, or how to reproduce it. The only workaround so far I know is to restart the akonadi-server in those cases (issue a "akonadictl restart" on console), but it is annoying anyways.
Why has the state changed to "RESOLVED"? It's still not resolved, it happen to me every few days that kmail starts with a blank screen and no contents. After closing, there still remains a process named "kmail" and I have to kill it, before I can start starting a next kmail-session.
The reporter decided to close his own bug. If you are still affected with a recent version (KMail 5.11), you could clone the ticket as your own bug.