Another one that happened only once and I don’t know how to reproduce it.
On Hunger in the dark our Zealot got grabbed by a chaos spawn in the area after the three barrels in cart event.
He got freed, the spawn got killed. I was busy killing small stuff at the time, so I don’t know how exactly it happened.
But on the player icon the red exclamation mark persisted. And not just for me, for everyone in the party. He was also tagable like elites/specials/monsters/bosses the whole time.
I don’t know if this is related but he also crossed the bridge as the last person of our group and just as he was about to hit the other end, the bridge collapsed, killing him instantly.