Spore blossoms are supposed to only be placed on the bottom of blocks, but you can break the blocks they were placed on and they will float there.

What I expected to happen was...:
I thought the spore blossoms would break when I broke the block they were placed on.

What actually happened was...:
They remained there, floating.

Steps to Reproduce:
1. Place a spore blossom on the bottom of a block.
2. Break the block it was placed on.
3. It will float.