Tall Tale: The Story Teller Bug

We were doing the Story Teller Tall Tale and experienced a a game breaking bug. On Mermaids Hideaway, the Crown Key was on one of the rock spires with no way to get up there. I liked the idea of using the cannon to shoot myself up there and got it right after a few times. The bug happened when I got up there and dug around. My friend was notified that I found the crown key (I did not receive the notification) but I could not see it. By that time my user interface and HUD disappeared. We could see the key lying there because it was shining (Could only see the shining effect and not the key itself) We were not able to pick up the key and abandoned the tall tale because without it the tale could not be completed. This happened after a server migration so I do not know if it had something to do with that. Except for this I enjoyed the tale for the parts we could complete.