1) Killed Cazadore dropping THROUGH the ground and becoming unavailable for looting. Also happened to a Powder Ganger.

2) With increasing frequency, parts of dead scorpions, Centaurs and occasionally humans protrude out of the ground a significant distance from where the actual body is. In one instance, a piece of the unique Centaur from the radioactive crater near Hidden Valley appeared next to Raul's prison at Black Mountain. When looted, humans affected by the bug retain the appearance of having some of their gear (usually helmets or armor) equipped.

3) With increasing frequency, two identical weapons and armor with different durability condition appear as one when viewing the inventory via Pip-Boy, boxes or companion menu; only removing one of them from the inventory uncovers the other.

4) In one instance, a killed Powder Ganger was resurrected as unkillable by, and unresponsive to, the Courier upon reload from a save. I actually watched him get up from the ground. He did, however, react to and could be killed by a companion; it is also possible that he simply became responsive after a few seconds of game time.

5) Traders' inventories and cap amounts often reset after exiting and re-entering the game.