In harbour of the twice drowned on siptah, where you have those three underwater sections that you need to swim through to get to the next part of the vault - went through the last one and my thrall stayed in the water - tried telling him to return, ordered to attack a nearby mob - even started combat and he stayed in the water - tried running back to the entrance - nothing. Could only get him back by exiting the vault - went back in and tried again, same thing
This happened to me but after a while he teleported back to my base.
Can happen now in any deep water, including noob river in the exiled lands. Never had a thrall get stuck in the water before 3.0. Now it’s too frequent. We don’t need more thrall bugs.
If I’m traveling or dungeon crawling with a thrall, I don’t need them to return home 30 minutes later. So I have to waste time by returning to where my thrall is located and move around on the nearest shore, hoping my thrall will respond.