Ender Chests' GUI is still named "Ender Chest"

Naming Ender Chest is still named "Ender Chest"

*I was naming the ender chest with an anvil, and then it still named "Ender Chest."

Here's how you get a bug:
1. Make a Anvil or get it in creative mode
2. Name the Ender Chest, and then open it up
3. It still named "Ender Chest"

Will somebody fix a bug for me, please?