in the 73.0 beta version if you put wood and try to change it to coal with the console when you un-pause it all lights on fire. is that supposed to happen??
I think I found a bug, not sure though. draw a line of coal, add wax around the sides. ignite the coal, it should melt the wax, but the fire temperature stays around 24° C.
Edit: Forgot to mention: it's only in the current beta build (74.1), not the stable one.