When placing 2 sticky pistons facing up on top of each other, placing a block next the the lower piston and then placing a restone torch on top of that block, a visual glitch will appear. This can be fixed by relogging. See the screenshots.
MC-9076
Piston Visual Glitch/Bug
Resolved
Duplicate
0
midder
(Unassigned)
Unconfirmed
piston, server
Snapshot 13w05b
Retrieved
29th 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.