I went through the End Portal, and placed down an End Chest and a Shulker Box, put all my tools and equipment in the shulker box, and poured water down the side to build down to y-0 in the End. I fell out the bottom and died, no big deal, that was the plan. But when I went back to the End, my Chest and Box had completely vanished. I suspect this is because I was unlucky enough to put them down on a chunk border, as this has happened before when I built a farm in the Overworld and two sticky pistons along a certain axis would sometimes vanish upon loading the area. The pistons I could handle but all my tools gone in an instant is too much! Please fix!