Two cultists (04032716, 04032719) in the exterior area of the Temple of Miraak respawn after clearing the dungeon. This isn't supposed to happen because the dungeon is marked to never reset, including the exterior cells. As is the case with many other non-resetting dungeons, the references in the exterior areas will continue to reset anyway.
Normally I would think the proper solution would be to add the 'DLC2TempleOfMiraakZone' encounter zone setting to both, but in this case it looks like the cultists are persistent and have enable parents. I'm not sure if they were intended to be disabled by a script or with an enable marker after DLC2MQ02 has been completed or not. If adding an encounter zone setting to the references is the only solution, there's no way that I'm aware of for the fix to be retroactive unless you haven't visited the area yet.
Note: I just observed that they continue to respawn even after completing the main questline by killing Miraak.