Me and some friends have been trying to play crucible in a stack of players between 2-6 players in the control playlist. When we queue for the playlist we see the X/12 pop up in the lower right corner. That number will climb a few positions, and occasionally up to 12/12; and then the game will flash a black screen and the queue will reset to the number of players in the stack of players. This process repeats (as far as we can tell) infinitely, and we arent able to play in a group. Solo queuing works fine, for everyone in the group, and occasionally this doesn't happen.
Accompanied with this glitch is a couple of UI bugs that occasionally accompany the main issue. When infinite queue occurs, at the initial queue the host will see the 3 second countdown reach "0:00" and then it will linger there for a short time without beginning the queue (I dont know if this happens if you are not the party host). And then the entire party for a short time will see player banners and ships with the rest of the normal UI absent.