Hi, I've been playing for over 20 hours but today when I started playing I noticed that sometimes when I clicked nothing happened.

I realized that this is because the mouse is reaching the border of the game and any clicks aren't registering in-game, even though I'm in full screen mode.

This is really annoying because if I click on the border it will sometimes minimize the game and I have to restart the whole thing, losing my progress!

I hope somebody can help me, because I love this game and have never came across any problems thus far.

P.S.
I have a Steam GOTY copy, I'm running Windows 7 and I meet all of the system requirements (obviously