Keep your eye on this topic, I shall be filling it as I find more of these.
Why is it that the NPCs can climb fences that the players cannot?
Two obvious examples are:
One of your favourite broadcast/territory points where there is a construction-type theme. An area is fenced off but has a gate with a shootable lock. This fence is far too high for a player to climb yet the NPCs vualt over it with ease.
The second is here at The Choke. NPCs routinely climb through/over the razor wire and back yet the players cannot. As a result, this has happened twice to me. This second time it was named boss loot. I cannot collect it as I am unable to get to that spot.
World's End: the wall on the right. Players can only climb up (why? who the frik knows? It is NOT a high wall!) but NPCs can gleefully go up and down.