If you craft any item inside the magic workbench whilst having a stack of 3+ items in any of the auxillary slots, the items in the auxillary slots will be doubled, even past the normal stack limit for that item.

In the example screenshots, I used the bug to duplicate clay in vast quantities, I burnt the clay with lava afterward.

Seems like this happens with any recipe not registered by eidolon and most items in the auxiliary slots, I'd guess it's an issue in gui/WorktableResultSlot#onTake (around Line 101)

• My Guess: Any item not registered for the auxiliary slots in a recipe will grow by it's own amount

Duplicate of #57.