I put some iron into a furnace and i was unable to take anything out

Put the summary of the bug you're having here

What I expected to happen was...:
Describe what you thought should happen here
I thought i would be able to take everything out of the furnace
What actually happened was...:
Describe what happened here
What actually happened was the furnace would not respond to let me take things out
Steps to Reproduce:
1. Put a step by step guide on how to trigger the bug here
2. ...put any item in a furnace
3. ...try to take it out