My friend who religiously played TF2 said this game was odd for him, because if TF3 was coming out, this is what he’d expect it to be like, but TF3 isn’t coming out, and this is a Blizzard game.

I had that happen to me (along with a bug where it would turn on, make a terrible noise, and turn off), luckily my Macbook was still under warranty and they fixed it for free.