Hey, great game, works fine for me, but after I alt+tab out of it, do something else and alt+tab back in, it doesn't regain the focus of the keyboard. Mouse works fine.
I can run shortcuts (alt+f1, alt+f2 etc) in the background, but I cannot get out of the game. The menu (alt + f1) does show up in front of the game in those situations, but running any program starts that program but returns the game to foreground.
Any more info I can give that might be helpful?