On the 24.4.1 version of Photoshop
iMac, macOS Ventura 13.3.1
Graphics AMD Radeon Pro 5300 4 GB (thought I'd include that incase that has something to do with the problem)
Does anyone have a clue what is going on here? These boxes appear while I'm painting, I can sometimes make them go away by toggling layer visibility off and on again but it always comes back. It's happened in multiple files but is never visible when exporting the artwork.