Yeah I'm experiencing the same thing. Cant join games when in a squad though the rest of my squad loads in. I've tried swapping who the squad leader is, this still gets me stuck in the main menu. I'm not sure how to resolve this currently.
Edit: Having your squad join a game and then joining them through steam seems to work. Only downside is the match will probably be full and you have to sit out the first 5 minutes of the match and hope someone leaves the game.
That does not solve it for me, i keep siting in the same dead lobby screen
