Break delay can be circumvented by hitting the Destroy key again

The bug

Minecraft has a six tick mining delay after breaking a block that wasn't instantly broken, but it can be cancelled by releasing the Destroy key after the block breaks and then pressing it again. Attached is a video file demonstrating the reproduction steps.

Steps to reproduce:

• Go into Survival Mode.
• Set up a row of blocks to mine. For example, use a diamond pickaxe with stone blocks.
• After a block is broken, immediately release the Destroy key and then press it again.

→ Block delay is cancelled