I find these at times and reported them through Support website but seems we get told to report everything here.
These are locations where I find Archæns stuck on certain points trying to move usually run but terrain and maybe programming prevents them so they just run or walk into terrain.
The location in this screenshot is found on Hospital > Sierra County Hospital > Truth or Consequences. The purple Smoker was running into the terrain but not going anywhere, did this for a while then something changed and he stopped then walked away in another direction.