play most of my A/S games off line and have no problem chatting with players. I do start my games off line. What I have found that is if you go off line once the game has started you will lose you chat ability. This happened to me a number of times.
Actually, this was a helpful comment. So I can be "offline" invite a specific person/people and not get invites. Good to know. I did it today in a scheduled match play game,
But it does not solve the larger problem.