I started a server on 1.15.2, converted it to a single player world when 1.17 came out. Recently updated that world to 1.18.1 and now my player can't hold ender chests and shulkers disappear when I break them and can't pick them up. When I break an ender chest it makes the picking up sound but the chest is not in my inventory. I tried /give and the ender chest disappears the moment its given to me, I can /give myself a shulker box but it completely breaks and disappears if I place it down and break it.