Attached blocks on End platform sometimes drop

The bug

Attached blocks on end platform sometimes drop and appear on the ground when re-entering the end.

How to reproduce

1. Go into the End
2. Place a block on the starting obsidian platform, so that it's in the area that gets reset every time you enter the End
3. Place a torch, a button, a sign or something else that can just be attached to other blocks on that block so that it is also in the reset area. To be sure, place one on all sides of the block, sometimes it doesn't drop.
4. Leave the End.
5. Go into the End again.
   → Torches (etc.) that were attached on certain sides drop instead of getting deleted.