Infinite experience from furnace bug

There’s this weird glitch where if I attempt to collect something from the furnace output and attempt to put it on a full stack of the same item that is in my inventory, it will appear to get collected but will then return to the furnace output slot and at the same time, experience will be earned, so you can get an infinite amount of experience. To fix this, just put the item in an empty inventory slot. View the attached video to see what I mean.