window expands beyond borders when maximizing

[UHC]

I think a linux OS update caused it.

That's interesting.  Did maximising Chrome originally work ok on your system and then you noticed the change to the buggy behaviour after an update ?
If you can identify a date when the behaviour changed it might help identify the trigger.

yes, and it's also on telegram for pc.
i noticed that if I change appearance (materia to greybird for example) fixes all oversized windows to the right size, but after you maximize those any window,it will become oversize again