Sword Doesn't Break Blocks

In Creative Mode a sword would not break any blocks

What I expected to happen was...:
When I left clicked on a block with my sword in my hand the block broke

What actually happened was...:
When I left clicked with my sword in my hand the block would not break

Steps to Reproduce:
1. Equip sword
2. Left click on block
3. Block will not break (like the bedrock in survival)