Furnace doesn't work.

*What I expected to happen was... the furnace would allow me to place items in it eg. coal, and extract smelted items from it eg. iron.

*What actually happened was... the furnace would not respond. It does not allow you to place items in it on the bottom for fuel, and it will not allow you to retrieve smelted or cooked items.

Steps to Reproduce:
1. Tap on the furnace to open the menu.
2. Have coal and other materials in your inventory that can be placed in the furnace.
3. Try to place items in furnace as normal, it will not allow you to do so on the bottom or right boxes.