Tediously the screenshot I printscreened hasn't included the mouse cursor so i'll endeavour to explain. When changing from full screen 1680x1050 to non full screen 1440x900 (haven't tested other res') an error results where the mouse position on screen doesn't match up with the input location in the game. The mouse position on screen is about the height of a civolopedia entry below where the game thinks it is. This seems to resolve after restarting the game in windowed mode. It appears to be reproducible with these steps: -Start the game with full screen mode as the current setting -At the menu screen, change out of full and drop the res -Load a game and spend 5 minutes wondering why it isn't registering mouse clicks half the time -.- Not game breaking but certainly frustrating if you swap between modes a lot like I do if i feel like watching a video while i play.