This issue has been plaguing me since alpha but it has gotten worse to the point where I can no longer push caps lock without the game messing up.
Whenever I press caps lock, the screen goes black for a few moments, and when it returns to the game, the game is extremely pixelated, and the cursor is extremely misplaced (a button may be highlighted, but the cursor will be a few centimeters above it). I can fixed this by alt-tabbing out of the game and maximizing it again, but it will still mess up if I hit the caps lock key again. Even stranger, whenever I try to take screenshots of the issue, the screenshot comes up normal, no pixelation, no cursor displacement. I even tried taking a video of the problem and everything looked completely normal in the playback.