A duplication glitch that allows players on single player to duplicate any item, even non-stackable items.
I have not tested this on Multiplayer, Because as of now, Most servers aren't running on snapshots. I have tested this on 1.7.9, It does NOT work.
This dupe is made by A redstone comparator sending signal through the item frame, this only works on chunk borders, and Has to face east.
Duplicate of MC-51610 – If you searched the tracker before creating this report, and were unable to find the indicated ticket, please comment with the keywords you searched for so that the original report can be improved.