Minecraft Realms - Anvil/ Nametags not working

Issue where you are unable to name items in an anvil. When naming an item it gets sent back to your inventory unchanged, it does not use any xp but does use anvils durability.

 

Steps to Reproduce:

1. Load a Minecraft Realms world.

2. Place an item in an anvil

3. Name the item in the anvil. 

(Item gets sent back to inventory unchanged)