Steps to reproduce:

1. Create an iconmenu in any of your plugins.
   (I'm using this icon menu resource: http://forums.bukkit.org/threads/icon-menu.108342/)
2. Open it whenever a player right clicks item X.
3. Hover with your mouse over any icon in the icon menu.
4. Look into your inventory in which slot is the item X. Then press this hotkey (slot of Icon X)
   -> You cheated the item you hovered over.

I think this is because you set in your inventoryclickevent ignorecancelled true. (But I didn't have a closer look at this so far)

https://github.com/haveric/StackableItems/blob/master/src/haveric/stackableItems/SIPlayerListener.java

Thanks for reading. Hope you can fix this.

darkness19

Sorry for duplicate...

Removing duplicate