Custom Crafting GUI bug

Status
Fixed
Issue description

When we shift click on an Output slot of a Custom crafting GUI with an item in hand(I think the item that can be crafted) , It crashes the game, this bug isn't supposed to fixed since long ago?

Issue comments

I can confirm this bug. It happens with any slot as long as the player has an item in transfer when shift-clicking the slot.

This bug will be fixed in 1.8.4.