I had the same problem. Apparantly if you do not play the game in fullscreen mode all kinds of problems appear in this new version. For an example: the screen starts spinning like the background for the start menu in game, if you change resolution of the game during this (not fullscreen) the game starts spinning in other directions. and the mouse acceleration is completely broken. If you play in fullscreen though all the problems just disappear.
Pontus Johansson
I had the same problem. Apparantly if you do not play the game in fullscreen mode all kinds of problems appear in this new version. For an example: the screen starts spinning like the background for the start menu in game, if you change resolution of the game during this (not fullscreen) the game starts spinning in other directions. and the mouse acceleration is completely broken. If you play in fullscreen though all the problems just disappear.