When joining a new fireteam from fireteam finder *after* having previously joined a session from FF already, I will be unable to hear some other people in the fireteam chat. I will have made sure I switched from the Fireteam Finder voice chat to the Fireteam Chat, but I can only hear some, if any, of my other teammates. Those other teammates are definitely in the Fireteam voice chat and not the fireteam finder lobby voice chat. This has also happened to other people that have joined my team through fireteam finder. They won't be able to hear me or some others in the fireteam. Only restarting the game will fix this.