I put raw pork in my smoker, left for a while and came back to find that it was finished cooking, but the arrow to show the cooking progress was glitched out.

Update: This affects all types of furnaces

To redo:

1. Put any type of food in the smoker. When it starts cooking, go out of the smoker

2. When the smoker fire goes away, go back in and the arrow will display the incorrect graphic