I do not know why, but after the last update, my mouse courser has not been visible while the game has been launched. I can still click things but I just can't keep track of the mouse. If anybody knows how to fix this problem, please get back to me and help me out. Thank you...
Wrong forum should be in Community Support, probably get more views and assistance there. Probably miles away but maybe worth a try. Try minimising the game and and restoring it, also try changing your screen res and going back, usb mouse? try changing the port, verify the game in steam.