This could be because something you have running has an overlay on-screen (such as a color temp adjuster or anything that can pop-up on screen over other apps - such as screen recorders, instant messengers, etc. If you can think of anything like that you have running, try turning it off.
This could be because something you have running has an overlay on-screen (such as a color temp adjuster or anything that can pop-up on screen over other apps - such as screen recorders, instant messengers, etc. If you can think of anything like that you have running, try turning it off.