Point-blank, I am un able to use the right side of my furnace.

What I expected to happen was to tap the feul slot and put coal inside, then put my items to smelt.

*What actually happened wasI am unable to use the right side of the furnace. I cannot insert feul or tap another slot. I also can't recieve the items already in it.

Steps to Reproduce:
1. Tap Iron ore and the ore is placed inside, although you cannot retrieve it.
2. Tap the feul slot and nothing happens.
3. I then exit the furnace and use a pick on the furnace to get my items back.