So here is something that has been causing me to restart a number of times for no other apparent reason. I have mapped the pan canvas to my stylus second button, but i cannot pan in the scratchpad with it, but with the spacebar and the middle mouse button, I can. But that's not the problem, if I make a mark with the stylus in the pad while holding the pan button on my stylus, i can no longer paint on it. It doesn't freeze though, i can change the color of the background in it, load and unload the brush icon, but just can't paint. Is this a bug with krita or the wacom drivers i'm not sure. But it can be reproduced every time, and the only solution is to restart krita. Closing the current file doesn't help. Any ideas?

It is a known bug: https://bugs.kde.org/show_bug.cgi?id=363080

Oh, thanks for the confirmation.