I have a room full of paintings in my survival world, for some reason they keep randomly drop themselves as an item, which then despawns overtime, which makes me quite frustrated having to replace them again. Then I created a new creative world, hung some paintings, flew really far away until the paintings unload, turned down my render distance, then fly back.

What I expected to happened was:
The paintings should be still there

What actually happened was:
Some paintings dissappeared (when in survival they will drop themselves as an item)

How to reproduce:
1)Make sure your render distance is not the lowest (if it is, turn up a bit)
2)Start a new creative world
3)Hang some paintings on a wall
4)Fly backwards until you see the paintings dissappear (or unload)
5)Now turn down your render distance
6)Fly back to where the painting was, the paintings have a chance to disappear (if you're fast enough, you can see some paintings disappear right in front of your eyes)