

I dont know, maybe its some kind of mandela effect i got, because i do need to update flatpak after system update. Maybe i just didnt update flatpak and didnt noticed everything not working until hours later, because lightweight apps didnt run as slow or had graphics bugs.
This is propably because app does not support fractional scaling. Some apps that does not support fractional scaling will either not be scaled (rendered at native display resolution), or scaled by system (will look blurry because window resolution does not match display resolution).