IME, most lootable containers and resources seem to respawn when a server is restarted. However, I’ve been online when the Official PvE I play on is restarted and no one else has yet logged on, and since the last hot-fix, I can’t recall ever seeing one of the little chests containing a Fragments of Power.
Mind you, on two characters and even my SP character I had collected the one beside the Citadel, the two in the SE corner, the one behind Red Mother, the one behind the snake boss, and the one at the pillar with the praying skeletons multiple times during the first couple weeks.
Yet for the last week or two? The only time I’ve seen any is if I come across one I’d not previously discovered. This holds true in unmodded single-player even if I leave my character idling at one of the spawns for several hours. This leaves me wondering if there was a change made so that the fragment chests can only be picked up once per character.
Anyone have any evidence that either supports or contradicts this experience? (Note, fragments still drop from bosses, so I’m not talking about that just the little chests.)