Description of issue:

I was in creative mode and I was enchanting my netherite helmet. The helmet would not go into the slot of the anvil or enchanting table.

What did I expect to happen?

I expected to enchant my netherite helmet with Unbreaking 3 and Aqua Affinity 1.

What actually happened?

My netherite helmet would not go into the slot of the anvil or enchanting table.