Mojave and PS2021. After disconnecting monitor, workspace turns green!
Coincidental with disconnecting a TV monitor ( HDMI to Thunderbolt) my Photoshop document becomes overlain by a bright green layer. If I scroll I can see my work layer flickering beneath the green. The only solution is to uninstall PS, download it again -not keeping preferences as this perpetuates the problem- and reinstall it.
Has anyone any ideas? In the middle of a large project so don't appreciate having to do this. I'm guessing that disconnecting the Thunderbolt cable causes the problem. Do I have to turn of TV, then turn off computer, then disconnect Thunderbolt cable every time I have finished with the monitor? Grrrrrrr