Item not moving properly

when im using my crafting table and I left click on a stack I have to hold down the left button and drag the stack up to the crafting grid and right click while still holding the left button to place 1 block on the crafting table then the rest of the stack gets stuck to the mouse and I cant find a way to drop it or place it back in my inventory. I have to exit the crafting screen to make it drop the stack. It is very frustrating and makes me not even want to play!