In Lightroom in "Develop" mode, blacks have started displaying as blue pixels. They weren't like this before. In "Library" mode they display correctly.
Edit: whites also display as red pixels.
This is on a Mac Studio (M1 Max)
This question and answer is similar, but changing the graphics processor settings did not work for me. I have tried all 3 of these settings, and restarted Lightroom after each setting change. Also restarted the computer, but it still has this issue.