The bug

Fungi and carrots on sticks cannot be used as fuel sources in furnaces.

Fishing rods can be used as fuel in furnaces so it's quite strange that fungus and carrots on a stick cannot.

Steps to reproduce

• Place some raw iron in a furnace.
• Attempt to place a carrot on a stick in the fuel slot of the furnace.
• → Notice how carrots on sticks cannot be used as a fuel source.
• Attempt to place a fungus on a stick in the fuel slot of the furnace.
• → Notice how fungi on sticks cannot be used as a fuel source.
• Attempt to place a fishing rod in the fuel slot of the furnace.
• → Notice how fishing rods can be used as a fuel source.

Expected behavior

Fungi and carrots on sticks could be used as fuel sources in furnaces.