Pick one stackable item. open your inventory and start clicking it the as fast you can. sometimes it duplicate, sometimes it just disapear...
remember: my computer is a bit laggy
MC-11334
Disapearing/duplication bug
Resolved
Duplicate
0
Pedro M. Zamboni
(Unassigned)
Unconfirmed
Minecraft 1.5
Retrieved
Duplicate of MC-341, please use the search function to see if your bug has already been submitted. Currently over 53% of tickets are being closed as duplicate.