Hello, I'm working in Affinity Photo on an iMac 27 inch with a retina screen running on OS Catalina. In a multi-layered file with the layer I am working on placed at topmost layer I have about half a dozen dead pixels that will not accept any paint.
I have tested the same sized file in Photoshop and set up a few pages in Affinity Publisher to see if there are dead pixels on the actual screen - there aren't. Please don't suggest it is my Mac's screen that is at fault - this latest machine is only a few weeks old and I have been working happily in all other programs without this occurring.
Two screen shots attached of the topmost layer where this is happening. Two separate occurrences. But, oddly the same pixel configuration.
Has anyone any idea what's happening here please? Thanks in advance.