problem with firefox 88

[Krzysztof Mrozowicz]

W dniu 05.05.2021 o 11:35, Jan Palus pisze:
>> Downgraded to version 87 and happy days.
> Works for me. Did you try with fresh profile (firefox 
> -ProfileManager), mozilla's binary (package mozilla-firefox-bin) and 
> in case it still doesn't work stracing it?
>
I tried with fresh profile - the same effect. It seems like FF is 
reacting for clicking, but doesn't "re-paint" the interface accordingly.
When I, let's say click "+" to open a new tab, then minimize the window 
and restore it, the new tab is there. Double-clicking on the window 
title (maximize/un-maximize) also refreshes the interface. Firefox 88 
from mozilla-firefox-bin behaves the exact same way.

Would you mind telling me how to strace the program in a correct way, 
please? I did it few times in the past but always I was googling the method.

--
Krzysiek