If the following blocks are named in an anvil and then are placed and broken by the player, their name is removed:
Composter
Stonecutter
Cartography Table
Grindstone
Cauldron
Smithing Table
Loom
Fletching Table
Lectern
MC-148748
Breaking blocks removes name
Resolved
Works As Intended
0
All of these don't have block entities, so they can't save their names (with the exception of lectern, but that doesn't have a UI).