I qued for a random normal dungeon today, Dec. 2, 2018, and when I qued for it there was no mysterious box shown on the list of rewards for completing the dungeon. I got in thru the que and completed the dungeon and got the event tickets but no mysterious box. I was under the impression that the event was scheduled to go on until December 5, 2018. Is there a reason that the mysterious boxes were removed? And is anyone else having this problem?