Sometimes when searching shipwreck chests, an empty map will generate with the name "Buried Treasure Map."  Holding it in one hand confirms that it is not filled.

Steps to reproduce:

1. Create a new "Large Biomes" world using the seed -7657144403601288391
2. Travel or teleport to these coordinates:  2769 62 8704
3. Open the chest, and observe the fake buried treasure map that generates.