Was doing a run of Contest of Elders with my friends, and when we all ended up dying and no revive tokens were available to use, the game said "Finding Spawn Location", but never letting us respawn.
I'm thinking, because you're intended to be returned to orbit if everyone dies and no revive tokens are available, that it's being buggy and ironically keeping you trapped in the mode instead of sending you to orbit.
Its actually worse than this. Several times it loaded me into an ongoing game where no tokens were left so just sat there looking for spawn. Only realised the reason for this bug when I got this message from using the final Rez token from a full run from the beginning. It cant be difficult to not throw people into ongoing games where there are no Rez tokens, just amateurish. Still since the mode has no loot people arent going to be playing it for long.