The bug

When bonemealing on small dripleaf with block on above, it will break while it grows.

Steps to reproduce:

1. Place clay on ground
2. Place small dripleaf
3. Get a bonemeal
4. Place the block on small dripleaf above. (For example: Place bedrock on above of small dripleaf)
5. Right click on small dripleaf
6. It breaks a block

See attached screenshot of steps.

(NOTE: Show the screenshot that provides how the steps using bone meal while you place other block.

It's possible to break a bedrock.)