In the new dungeon released today, in the room where you drop down and use the scorch cannons to activate portals in order to send bombs to the ceiling. If you die at the first plate/portal, you respawn at the top of the drop down with only 4 seconds to "turn Back" and you cannot get back down before dying. My other two fireteam members were ahead of me doing other things, meaning I was the only person at the beginning when I died.
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So to add to this, when I died, My orb was up in the ceiling where you exit the room after the encounter. so my teammates could not revive me. I literally sat there while the other two done the encounter.