Hey, I am not entirely sure what might have caused this issue, since I installed quiet a few things and updated my system in one session, but after I rebooted my laptop my GUI was buggy, this showed in the Application launcher which did not display images anymore. Also my Taskbar is completely green and my items on the desktop have no icons. Here is one example:
I have the same problem with my laptop, but only when an external monitor is connected on boot.
I don’t use custom themes, and this can be reproduced with a new user.
And there is nothing in journalctl to indicate the real problem.
The solution for me: I connect the monitor only after logging in.
Another way is to restart plasmashell after each login:
This is exactly my problem, and restarting the plasmashell fixes it. Your solution works, but I would prefer not to type this in every time I reboot. When did this bug started for you?
EDIT: It doesnt fix everything, my titles are still the wrong font