playing a video i.e  Youtube in firefox  and switching to fullscreen or leaving fullscreen mode will lock up the session hard!  
Might be only reproducible with a NVIDIA GPU 

Managed to reprocuce with freetube, but it takes many more attempts. Firefox locks up the session usually on the first or second  attempt.



Reproducible: Always

Steps to Reproduce:
1. disable desktop animations   'gsettings set org.gnome.desktop.interface enable-animations false'
2. start playing a video in firefox i.e  youtube
3. switch to fullscreen  ( key f )
4. leave fullscreen mode if video is still playing  (key f)
5  repeat/ goto step 3   It usually locks pretty quickly 


Actual Results:
desktop will freeze hard 


Additional Information:
not reproducible with desktop animations enabled (default setting)
Any easy way to speed-up those awful animations?


upstream bug report:  https://gitlab.gnome.org/GNOME/mutter/-/issues/4693