Hello, all and please, forgive me if this is not right place for the question/comment...
I upgraded my PC to FC35 and bunch of the problems appeared/returned.
From light to worst:
- plasmoid PAGER does not saves the setting "Text display"->"Desktop name". Also "APPLY" button is not activated when this ENUM is changed. I managed to save it by triggering another options. But still, on each reboot pager behaves randomly - with text or without;
- keyboard shortcuts were overwritten but partially(?);
- plasmoids do not respect the system font setting - I passed one by one to reset it.
- session is not saved !!!!! This is the worst thing! I wasn't able to save it in any way. Even switching to manual saving does not work.

Many thanks for any help.

OK, all problems passed away after I switched from Wayland to X11