Placing a redstone block on a upwards facing piston doesn't extend it, but after powering the piston and de-powering it, the piston stays extended, because it is getting powered from the redstone block 1 block above it.
MC-5727
Piston stays extended after pushing redstone block
Resolved
Duplicate
0
Raitis Krikis
(Unassigned)
Unconfirmed
BUD, piston, powered, redstone, restoneblock
Snapshot 13w01a
Retrieved
Duplicate of MC-108.