The Shocking Green Full Screen Mode

Dear Adobe team. I’m using a MacBook Pro with macOS Big Sur. The Screen mode that I’m using is “Full-Screen Mode With Menu Bar”. Why is it that I get a shockingly bright green on my screen whenever I press the ‘tab’ key when I try to turn off the menu bars? In previous versions of Photoshop up to 21.2.8 Release, it worked without the screen error.  Typically, I would use ‘F’ to toggle among 3 screen modes to check my design presented on a light grey to a black background.  Let me know if this can be resolved. Thanks.