Not breaking blocks in Creative

When playing in creative i had an damged iron swordi couldnt break blocks with it

I thought blocks would break well they didnt everything was indestructable just like bedrock

What happend was: I was cheating a bit in survival mode and went in creative when i tried to break blocks with my sword it was impossible.

Steps to Reproduce:
1. Go to survival mode (cheats on)
2. go in creative
3. get a damaged iron sword
4. try to break blocks