Hello I am RBG Persian,
Me and a couple of friends have been experiencing problems switching to game chat on Titanfall. Since Xbox One party chat supports only eight people, me and my friends have to switch to game chat in the Private lobbies when there are 9 or more of us in the lobby. We have noticed this mostly in the Beta Private Match lobbies. Me and my friends enjoy playing the game, but this chat issue is very annoying. We found out that switching to game chat doesn't always work so what we need to do is quit the game and leave the party chat, then start the game up again to be able to make the game chat work. another problem that has occurred, is that sometimes we cannot connect to the same server and it take like 10-15 minutes for all of us to join the same server at times, just to be able to play in our private lobby. Hopefully if this does get read and that this problem will be fixed, we understand stand that everything is new and that there will be issues, but these small ones are something we hope get fixed.
-Thanks for Reading