I was in the dungeon, and I had a god set w/ sword, and a gapple. I killed someone with leather boots and an iron helmet, and the "You are now in combat, you may not log out for 10 seconds" message came up. After I killed the player I pressed tab and saw that the person that I wanted to kill in the dungeon had left. Knowing that I was still considered to be in combat I typed "/spawn". I knew that it wouldn't work, I just did it so that I could press enter, and the up arrow to send my last message, which would then be /spawn. To my surprise it worked, I warped to spawn. And I realized that I had no items with me. My gapple, and god set were gone, my inventory was empty.
I warped back to dungeon and when I spawned in I was at the dead screen where you click "respawn or main menu" The message said that I was killed for PvP logging. If you can't refund me the items then I request that the equivalents meeble value be payed to my account under the name "diamondtree777". The staff member that I messaged about this, told me that it was a bug, and that they saw evidence of "an unknown death" but "they had no proof of the items I had". If you can't find them from the time that I died. You can check the history of my enderchest, and you will see that I took the god set out of there. I may have stored it in my /chest 1 for no more than 20 minutes before taking it back out and warping to the dungeon little to my knowledge that I would be killed by a bug. This incident occurred yesterday 11/2/2015 between the hours of 12:00 PM and 1:00 PM EST.