Breaking the block above a spore blossom or a root block will cause it to "float"

Breaking the block above a spore blossom the spore blossom "floats"

What I expected to happen was...:
The spore blossom and or roots should break off.

What actually happened was...:
It just floats

Steps to Reproduce:
1. Place a spore blossom or root
2. break the block supporting it