If a rail is placed above a downward piston, and the piston is powered, it will break the rail.
MC-98061
Activated Pistons break Rails
Resolved
Duplicate
0
David Bastian
(Unassigned)
Unconfirmed
Minecraft 1.9 Pre-Release 3
Retrieved
Please attach screenshots showing how you are powering the piston. Does this also happen when you power the piston by pointing a powered repeater into a solid block next to the piston?