Description of the issue:

when making a recipe for the arc furnaces, it does not use all of the additives when smelting multiple items at once or when additives are stacked

Single input, with additives separate:

Single input, with additives stacked:

Multiple Inputs with additives separate:

Multiple inputs with additives stacked:

Versions & Modlist

IE: 5.0.3-138
Forge: 36.2.2

Could you please also tell me what the designed inputs of that recipe are? I can't really identify any of those blocks.

compressed iron block + 2 compressed coal blocks, makes 1 compressed steel block

here is the example recipe I'm trying to do

Any update on this?

Closing this because support for 1.16.5 has ended