In Breeze or other window decorations, I can set a class without a window decoration as described above without any problems, and then undo everything so that I have a window decoration again.
Something was probably overwritten, and I can’t figure out where or what
I have paulm, the developer of klassy, directly in my question on KDE Discuss. Seems he doesn’t have any clue either. He definitely hasn’t given me an answer yet. Maybe I really screwed something up. I definitely can’t find a solution
My most important files are backed up. So a new installation should only take about half an hour until everything is available again
No Problem. As I described above, I am running ( klassy for colors in windows) application launcher and global menu in my above panel. For me, it makes sense to use ‘no window decoration’. But as I said, I must have something screwed up…
@UncleSpellbinder It’s pretty simple. Just delete the *.rc files located in ~.config/klassy and restart Plasma.
I’ve done that so many times whenever I’ve had problems with KDE apps. Why didn’t I think of that?