I put some coal in a furnace and the game immediately crashed
It happened when both inserting coal manually and with a hopper
Steps to Reproduce:
1. Place a furnace
2. Put Coal in the bottom slot, whether its with a hopper or manually
Also side note, I regret putting more than one coal in the hopper to try that, it crashes every time i start the world.
Environment
OS: Windows 10 (ver 10.0, arch amd64)
Java: 1.8.0_25 (by Oracle Corporation)
Launcher: Minecraft Launcher 1.6.61 (bootstrap 100)
Minecraft: 16w39a (updated Wed Sep 28 06:33:50 PDT 2016)
Duplicate of MC-107392