Interesting. Three other people have reported it working at Protondb. I didn't even think to check there before, but one person does mention that they had to play in windowed mode. If you're playing in fullscreen, you might try windowed.
will check that out later
Its on full screen but only shows up as a square screen and if i untick full screen it shrinks to about 75mm *75mm (3"+3") so far to small to play