This might be a shader issue again:
It does not always happen, but when it happens it is very distracting.
If I go into reaper form again it reverts to normal until I drop out again.
I also tried the shader patches from Fixes for various graphics bugs on Linux - #8 by KingEKoP and they work, but not on this issue.
@Azerov Did you encounter this bug as well? On the gitlab page I also uploaded a short video.