hi, despite the instakill bugged npcs (which there is a thread for so not more here) i like a lot of things in engineers. but i just killed 2 npcs who attacked me and before i can pick up all the worn shield emitter etc i noticed some disappear. do they vanish after very short time or supposed to hang around until you collect them and leave? its just curious when i wasnt near done i pick one up and the other two vanished.