I'm having very buggy behavior as well with my Sony A7iii RAW files. With the RAW file open, often if I simply 2 finger touch the trackpad on my MBP, it will get blurry, sometimes the color balance shifts. Sometimes, I'll return to the picture and everything appears to be normal. Sometimes it reverts back to normal, sometimes it does not. What I've been doing is exporting the RAW file to Affinity, making my edits and saving the file as a TIFF or PNG.
It's difficult to get a screen capture of the color balance and exposure change because I can't do shift/command/4 and move the cursor with the trackpad at the same time.
Attached is an example of the blurry issue I'm having. The photo wasn't edited. It is a cropped screen capture of the same photo after simply touching the trackpad. I was freaking out a little because initially, I thought every picture from a 300 picture photo shoot was out of focus.
I always shoot RAW, but I may use JPEG for a while until this is resolved.