Happens in dungeons too.
(...)
The patch notes do not mention any change in the agro system for the game, so I believe this to be unintended behaviour.
Happens in dungeons too.
It sure does happen in dungeons.
Some base game dungeons where it happens all the time are Wayrest Sewers 1 & 2. They both have enemies that will not move no matter what. Like the skeevers that are in a circle and all the other enemies on the balcony/catwalk from one tunnel leading into another tunnel. Taunt them? They won't follow. Chain them? They still won't follow. They just stand in one place and have been bugged like this for a looong time...
I've also noticed it happening in newer dungeons like Scrivener's Hall. Sometimes the big High Isle Knights as well as the Atronachs and Spiders that have the ice circle mechanic will not move even when taunted or damaged.
The problem isn't just in one part of the game. Enemies have been acting weird all over the place. And it isn't necessarily something new either. It seems like something that was already broken has spread to other parts of the game...