I'm having a weird situation that only happens in the Mac build of my game (Windows and html5 doesn't have this).
Basically, if the cursor touches the right side of the screen, the cursor gets immediately stuck in the bottom righthand corner of the screen. Almost feels kind of magnetic, and the cursor has to be 'pulled' free of the corner.
If the cursor touches the left side of the screen, the cursor bounces off the side towards the bottom of the screen. No 'magnetic pull' however.
The game is playable, it's just annoying.