Okay, this is going to sound crazy, but whenever I start the game on my computer and then attempt to use my keyboard on another program, my computer believes that the Alt key is being held down.

I tried this multiple times with multiple keyboards, and it always came down to the game client itself. I had no problems with the launcher, but as soon as the game started, I would either have to log out or restart my computer to fix the Alt key issue.

I don't know if anyone else is having this problem, but I know that it is rather annoying to have to either reboot or relog every time I'm done playing this game.