After I had gone over the wall where there is an ammo box and into the orchard, the horde came and I found myself fighting and then dying alone as all of the bots had decided to stay on top of the wall to take in the view. Although Sienna did offer some token fire support, all 3 preferred to remain where they were.
Sometimes the bots are unable to follow if one does not allow them enough time to catch up. However, since I always pause at the top of the wall, the above should not be applicable in this case.
Today, I visited Morgensloft again after the above incident and once again, the bots did not follow me but remained at the top of the wall. It seems to me that they might have some problem jumping off the wall towards the right, but that is where one would naturally go in order to search the buildings on the right. I moved past their left (when facing the orchard) and they were able to jump off the wall towards their left. Perhaps they are being obstructed on the right side of the top of the wall.
