I'm using the July update to Elsweyr, which fleshed out Dune more than the prior version. What I've noticed is that the NPCs who try to move between the exterior of Dune and the market place via the main gate (or vice versa) seem to get stuck in some kind of loop going through the gate. I don't have an problem moving back and forth through the gate myself.
The NPC walks up to the gate, fades out, but then reappears, fades out, reappears, etc. Eventually when enough time passes that the NPCs schedule has it doing something else it will wander off but only after spending a long time at the gate unsuccessfully trying to pass through. The NPCs I've noticed it with include one of the guards trying to move from inside the city to the outside, and Shanar trying to move from the outside to the inside.
As an experiment, I tried to disable the gates to see if the NPC would just walk through, since the city isn't in a separate worldspace. However, what happens is the NPC walks up to where the gate used to be and then disappears entirely rather than walking through. The NPC doesn't reappear in that case. I also tried starting a new game and heading over there (just to make sure it wasn't something messed up in a save file) and the behavior is consistent.
The only mods I have running that alter that area are Elsweyr itself, and the AWLS and RAEVWD meshes for Elsweyr. AWLS or RAEVWD are just mesh replacers and don't alter the meshes for the gates or the wall around the gate so those shouldn't be related to the issue as far as I can see.
Any thoughts on what might be causing the issue here? Thanks.