To reproduce:
1. Place sideways piston
2. Place flower pot on top
3. Power piston
4. Observe the flower pot stay put
5. Place block next to flower pot without unpowering piston
6. Observe the flower pot pop off
Linked issues
is duplicated by 1
Comments 3
You can place them on the top of extended upwards/downwards pistons, but sideways pistons only allow placement in their retracted state.
Just a question, are flower pots or other stuff allowed to be placed on extended pistons?