This is intended, the original recipe was changed to give acidic electrochemical science packs so while it still exists, it doesn't have the same icon, order, main product and result (all of these changes are made in the data-updates, lua:21 to lua:36)
To obtain the original electrochemical science packs, you either have to let acidic electrochemical science packs "spoil" (neutralise) on their own, or force them to turn into electrochemical science packs through the recipe "acidic-electrochemical-science-pack-neutralisation"