This has happened quite a few times. When i'm drawing in floating mode, it randomly disappears. Then on the browser page, the area just stays white and the drawing tool doesn't reappear on the browser. It's starting to get really annoying and I have been losing a lot of drawing progress because of this. Any help is appreciated~ ;D
I have the same problem.
I reported it too.
I'm trying to find that topic but I can't find it.
I think Mick said that it had something to do with the hardware.
At least, that my hardware was severely messed up and it still is.
Just try to safe as often as possible and don't try to strain your computer.
Like opening 20 tabs in your internet browser or something xD