[0.18.17] Different Smeltables with the same ingredients

[PyroFire]

Found through Randotorio.
viewtopic.php?p=486916#p486916

Different Smeltables with the same ingredients creates a conflict where one of the recipes can't be used because there is no way to select a furnaces recipe like you can an assembler.
E.g. if iron plates and copper plates both use the same ingredient, iron-ore each.
Mods can work around this, but it still seems like something that should throw an error?

[Klonan]

Its not worth the hassle

Furnace recipes can have the same ingredients, but for many reasons, not be a problem,
For instance if they are with different recipe categories,
or If a mod script enables and disables them with precision.

Check with your own code, because this isn't really a problem for the base game