Thunderbird glitches when resizing the window

Support Software & Applications
1

When resizing the window its interface is updated in chunks.
Thunderbird version 91.4.0
Linux 5.15.2-2-MANJARO
Laptop: Lenovo ideapad gaming 3 15ARH05
Use optimus-manager in hybrid mode, when try to switch in integrated mode linux just freez on
root: clean, ...

2

I’ve (always?) had that with my thunderbird. Cannot remember for how long. I think it’s been since I set this machine up almost 3 years ago :thinking:
Didn’t pay much attention to it because I rarely resize it’s window though.

3