Breaking 2 block tall grass shows peony for a moment

Put the summary of the bug you're having here
So if you break two blocks tall grass, you will see peony for about 0.1 second.
What I expected to happen was...:
Nothing

What actually happened was...:
I saw peony for a short moment.

Steps to Reproduce:
1. Place down 2 block tall grass
2. Break it.
3. That's it... You will see the bug.