Watch http://www.youtube.com/watch?v=jt916TLqChY to see how to reproduce it.
MC-7562
Redstone-Loop/Dispenser Bug
Resolved
Duplicate
0
Exopandora
(Unassigned)
Unconfirmed
block, dispenser, multiplayer, redstone, server, singleplayer, sound
Snapshot 13w02b
Retrieved
14th duplicate of MC-846, please use the search function to see if your bug has already been submitted. Currently over 45% of tickets are being closed as duplicate.