I just played and Stored new Diamonds in a shulkerbox, which I put into my enderchest. I took of with my Elytra and after about 5 sec the game crashed. After Joining again I spawned at my enderchest, but my shulkerbox with my 4 Stacks of diamonds was gone.
Please fix it imidiatly as this happend before and I lost some Items, but this time it was a whole shulkerbox