ToV, entrance guard unable to path back to spawn point

[worch]

I noticed one of the mobs in the 6 (or 8?) mobs guarding the entrance bridge in temple of veeshan was pathing back and forth, as if he was unable to return to his spawn point. In the attached picture, notice the "a cerulean sky gazer" that is pathing behind the bridge. Rough loc is -1470, -499, 3.