It's kind of annoying that the button to choose a class and the button in the class selection to join the game are in the same place The problem comes when I try to click the choose class button at the same time that the game automatically opens the class selection screen. I end up picking the default assault by accident, and then I'm not allowed to change that accidental selection until I die
I too have had this happen to me. I tend to quickly switch to console and type 'suicide' if that happens.