I can't target the mob (a spriggan) that fell into an out of bounds area under a slatted Murkmire style platform. It can attack and hit me with spells, so I'm locked in combat and I can't recall or quit the game or otherwise leave the situation while preserving my progress. I had to exit to Xbox home screen and reboot then wait several minutes until the server timed out and released my account again.
When I was finally able to log in, the toon was outside the Archive, in Windhelm where I had originally traveled from. When I re entered the Archive it had reset and I had lost all progress on my run.
This is a major bug and insanely frustrating. WTF.