Iron Citadel arena entrance is bugged

I got the classic DX12 crash while I was in the Iron Citadel boss fight. Ok, no problem. I portal back into the Iron Citadel. I use the checkpoint to get back to the arena entrance. I use the arena entrance.

I AM IMMEDIATELY (within .1 seconds of my character animating off of the elevator) CROWD CONTROLLED AND STUNNED REPEATEDLY AND KILLED INSTANTLY.

I just lost yet another Citadel and T15 map. I should be allowed to re-enter the arena without fear of instant death. Just reset the boss state, I would rather redo the entire fight than get some BS death.