The double-click shortcut duplicates items

There is a bug of infinite crafting and items on my inventory and crafting table... The new tweaks to the inventory(the double-click specifically) have made it possible to make infinite torches, pressure plates buttons, etc. i.e. If I have a torch in my inventory, and I have a stick and a piece of coal, I can put the recipe of the torch and the torch appears in the right-hand side box, I can double-click the other torch in my inventory so that I can get 4 extra torches without the cost of any materials... My evidence and example of this bug may be found on Youtube on this video:watch?v=ZV7SWPrn7n0