Brewing stands can't be moved by pistons

Brewing stands can't be moved by pistons.

What I expected to happen was...:
When the piston activates, the piston would move the brewing stand to constant change the villager trade.

What actually happened was...:
The piston don't move the brewing stand.

Steps to Reproduce:

1. Place a brewing stand
2. Place a piston facing brewing stand
3. Power the piston