so addressing the screenshot directly, you cannot put soft coal in an iron furnace, it will not cook. The message "missing basic skill recipes" is a faulty message, and instead means you either do not have enough fuel, or do not have the right ingredients for the recipe you want to make. E.G. only having bones, but not sap in the furnace.
can you take a screenshot of the furnace with several (2 or 3 should be fine) medium or hard coal in it and the copper ore? that way we can be absolutely sure that this is in fact a bug. can you also make sure that you have this skill unlocked?