Help about plasma and kwin

Hi to all.
I have a strange beahouovur with my installation of plasma.
If I choice openbox at the login always if fine and also if i choice kde+openbox everything run ad aspectt.
But if I choice plasma at the login i can open only tilix using ALT+F2 and from this terminal launch kwin_x11 --replace.

Any help?
Thanks for help and comprension with my engkish :frowning:

I Try to create a new user and use it.
And with this new user I don’t have any problem, someone know where I can reset plasma + X11 setting?