I am getting lots of graphical glitches – such as green lines, totally red overlays, etc. Here is an example:
This example occurred when playing with the Brightness slider. Other graphical glitches include what looks like green ‘matrix code’ or lines and other weird color overlays.
Sounds like some kind of GPU bug or error. You can go to preferences and switch to OpenGL (or Metal if it’s on OpenGL). Quit and reopen the app for the change to take effect. That might help.