Whilst I use KDE, I haven't been brave enough to go full unstable on my
system - I try to avoid ~amd64. So my KDE install is stable.
And if seems your problems are ~-related, as shown by your mentioned
version of kwindowsystem (5.48), unlike mine @ 5.46 (and equery concurs).
So my advice to you would be to settle back on stable (it's really not that
far behind) if you would prefer a working system over fighting issues like
this.
Some people enjoy the process of figuring this stuff out. Some want a
working system. Whilst I am a little of both, I'm leaning more towards the
latter as I get older and have fewer fucks to give, and it sounds like
you're getting there too.
-d
