If you are placing two pistons back to back (vertical) and you activate the upper one the other get activate too. In 1.4.7 this doesnt happen.
If you are activate the lower one, this doesnt happen.
If you are placing two pistons back to back (vertical) and you activate the upper one the other get activate too. In 1.4.7 this doesnt happen.
If you are activate the lower one, this doesnt happen.
Duplicate of MC-11220.