Lockboxes are being locked when you log out

Please, provide a clear description what the bug is: If I log out with unlocked lock boxes in my inventory, when I log back in they are locked again

Steps to reproduce the behavior with as much detail as possible:

1. Open a lock box
2. Log out
3. Log in and your lock boxes will be locked again

IDs of affected creatures, items, quests or spells with a link to the relevant page:

Item: https://database.turtle-wow.org/?item=5758

Expected behavior. Describe how it should work:

A rouge lockpicks the box. I log out. When I log back in, the box should still be unlocked.