Mojira Archive
MC-62509

Pistons and slime blocks can move blocks that have no face connected with them

A top half slab can be pushed/retracted by a Sticky Pistion, even there's a space between the slab and the pistion.

What I expected to happen was...:
The top slab would become a bottom slab

What actually happened was...:
It still triggered and pushed the half slab up and it remained a top slab

Steps to Reproduce:
1. Create a new world
2. Get a sticky piston, a half slab and a Redstone Block
3. Build it so that the slab is a top half slab and activate the piston