Reverse Factory machine will recycle (uncraft) nearly any item placed inside. Supports the recycling of most, if not all, modded items.
Mods introducing new content into the game.
Furnaces, assembling machines, production chains.
Set efficiency to 100 but get only 25% back.
Did you also change the balance setting from "vanilla" to "user-defined"?
Ok, the bug has sat in front of the screen ;) Thanks!
I might end up removing that setting, since it might just make things more convoluted.. but glad to know it wasn't a bug!