When you use the comand /fill x y z x y z air destroy it always apear the message no blocks were filled, independently if they were or not
This only appens with air

What I expected to happen was...:
When a block is replaced by air it should say x blocks were filled

What actually happened was...:
It said No blocks were filled

Steps to Reproduce:
1. Go to a world with cheats
2. Use the command /fill ~2 ~2 ~2 ~-2 ~-2 ~-2 air destroy