Photoshop artboard going green, help please!

[Bruce Lee]

Hi, does anyone know what this issue is?

When I have my Macbook Pro connected to my LG 5K Ultrafine and using Photoshop 2021, the artboard/window goes green whenever I try and zoom in beyond 100%. This only happens when I'm connected to the monitor.

Ultrafine

 

[buttongerald]

Go to the Photoshop Preferences, and Disable/Deactivate native canvas under Technology Preview. See if that does the trick.