Right clicking the output of the crafting fields seems to halve the amount of Items you get (if the output is more than one item). Tested with Wood -> Planks, Planks -> Sticks, Sticks -> Ladders, Stone -> Stone Bricks and Coal Block -> Coal.
Some screenshots added for better understanding.
Right clicking the output of the crafting fields seems to halve the amount of Items you get (if the output is more than one item). Tested with Wood -> Planks, Planks -> Sticks, Sticks -> Ladders, Stone -> Stone Bricks and Coal Block -> Coal. Some screenshots added for better understanding.