A redstone block powers a piston without touching it. The piston stays extended after removing the redstone block.
I uploaded the files on imgur because I didn't knew one could upload files here.
http://imgur.com/a/6UAgF#2xvoanc
MC-63177
Weird redstone behavior
Resolved
Duplicate
0
Liam Davies
(Unassigned)
Unconfirmed
Minecraft 14w30b
Retrieved
WAI. MC-108