I'm playing on a Mac and am having a problem:
The little grabby hand will only move within the upper left quarter of my screen no matter the size of the game window. However, it reacts to the mouse movements as if the whole window is in use.
I can shrink the game window down to fit in that upper left quadrant of the screen but to move the hand my mouse pointer leaves the window, then I wind up clicking outside of it and losing the screen.