Furnace XP duplication

XP can be duplicated using just a furnace. put diamonds in the players 3rd slot (dosent need to be diamonds) and keep placing and removing the diamonds when the furnace has been selected... The appears to think you are removing the items from the furnace and gives you XP forever... I can receive 30 levels in under 5 seconds... This bug is alot worse than the previous bug that you fixed. i suggest you watch videos on youtube for a proper visual explanation.