Object is busy
Objects like bins or logs can become stuck if the player's game client who interacts with the object crashes.
I noticed this more than once and when I relog and try to pick up or open the object I was interacting with before the crash, the object is busy and can't be interacted with any more by anyone. The database should release the objects after a certain time. Same if someone is looking in a bin and forgets to log out, the whole tribe can not interact with the shared bin. I think this is a high priority bug since it might corrupt the database perhaps.
Edit: I had a stuck tree log and after server crash it was released as in not busy any more.