Pre: Soulbound item from locked collection in storage. Collection unlock item on different character than the one the first item is soulbound to.
Reproduction:
1. Unlock collection on character 2.
2. Log on to character 1.
3. Move the soulbound collection item from storage to the character’s inventory.
4. Stare in befuddlement and reboot game.
5. Post-crash, item is unlocked in the collection.
Crash isn’t repeating itself for me, so it may be a one-time deal.