Hey team, I've been trying out Affinity Photo as an replacement for Photoshop and I'm currently experiencing glitching of paint strokes when working on a 32-bit document. It seems to be affected by the brightness levels of the pixels in the document from what I can observe and sometimes certain areas are unpaintable at all. Restarting Affinity may resolve the issue for a few strokes but it will occur again.
Below are two images, hopefully the issue is obvious enough!
Edit: Tried 16-bit and the same issue occurs. Brush strokes will overlap (the brighter strokes cannot be painted over). See 3rd image for the result.
Edit 3: It's happening it 8-bit too! This is getting really weird.
Edit 4: Seems like the issue can be resolved by copying the content from the exr/hdr/affinity document to an new one. (The 2nd image was an 32 bit file from Affinity Photo for Mac). Brush strokes are overlapping and I'm able to paint over the image as expected. (4th image, showing that brush strokes overlap predictably)