Bug

When teleporting from within the spawn chunks to a region far away (outside the spawn chunks) that contains item frames (this particular bug had maps on said item frames, not sure if other items will work), the item frames will pop off the wall as items, and they will no longer be visible on the wall, but they will still be on the wall. Reloading the world will reveal that the item frames are in fact still on the wall.

How to Reproduce

Seed: -1322801711

Location of Item Frames (approximate): 70, 80, 1070

1. Place Command Block within spawn chunks
2. Write teleport command to approximate location of Item Frames
3. Teleport to Item Frames via Command Block
4. Wait approximately 3-5 seconds for Item Frames to pop off the walls

Images

The image with only items on the floor is after teleporting and before reloading the world.

The image with items on the floor and Item Frames on the wall is after reloading the world.