I tried this and the pistons derped out
MC-9041
Derp piston
Resolved
Duplicate
0
Axel Truedson
(Unassigned)
Unconfirmed
redstone
Snapshot 13w05b
Retrieved
Duplicate of MC-8198, please use the search function to see if your bug has already been submitted. Currently over 51% of tickets are being closed as duplicate.