Every time someone reloads the canvas, the quality of the image drastically drops. The lineart gets all blurry, and the colors get weird, too. It honestly looks like jpeg compression fractals. Is it possible that the size of the canvas, or number of layers could be causing this? Our current canvas where we have this issue is 4,096x4,096 and the layer count is currently up to 10.
While it doesn't make drawing impossible, it is very discouraging for all of your hard work to suddenly get jpegged just because you had to reload your computer :/