Affects Version/s: Snapshot 13w06a
Fix Version/s: None
Environment:Windows Last XP
Put the summary of the bug you're having here
I expact the furnance send a redstone power when the furnance are burning logs.
The logs and wooden planks desapear(in same time, the furnance window close)
Steps to Reproduce:
1. Put a furnance and a comparatore.
2. Put logs and wooden planks inside.
I create a video to show it: http://www.youtube.com/watch?v=lU5iCM3Nn3M&feature=youtu.be