Put the summary of the bug you're having here: When i use the furnace I am unable to put fuel in it. I click on the "load fuel" area and it will not highlight to add fuel.

*What I expected to happen was...: Once I clicked on the lower box it should have highlighted and then I should have been able to add cole or other fuel
Describe what you thought should happen here: it should have highlighted and allowed me to add fuel

*What actually happened was...: nothing. the box would not highlight so I could not add fuel.
Describe what happened here

*Steps to Reproduce:
1. place furnace on surface and open
2. click the add fuel box
3. attempt to add fuel to the furnace