Items drop in wrong places

When you standing in spaces where your head touches ceiling (2 blocks vertically) and when you break the painting the item teleports to surface. its only a visual, item drop is actually can be picked up if u jump 

This occured multiple times 

One time i died near y 10 same conditions as above, but this time my items was nowhere to be found, my friend tried to jump up, dig around, dig up but items werent found.