The furnace doesn't work.

*What I expected to happen was put cobblestone or iron in the furnace

*What actually happened was nothing I couldn't grab or put something in it

Steps to Reproduce:
1. First I open the furnace
2. Then the furnace screen open
3. Then if I trie to tap the boxes where the wood should be placed the furnace wont do anything.
4.it doesn't crash the boxes are just frozen