Not sure if I just don't understand, or if its a bug/bug with warly.

I am trying to create Creamy Potato Puree, ingredients are listed as:
[roasted garlic : potato : roasted potato], [roasted garlic : potato(2/2)], [roasted garlic : roasted potato(0/2)], [potato : garlic : roasted potato]

I have 2 potato, a garlic, and a carrot (filler). All the potatoes and the garlic are highlighted (not red), all the roast garlic and roast potato are red (not present)

I do not understand why there are 4 separate possible ingredients listed with no mention of filler. I understand potato (2/2) means I'm using two raw potato, but why is raw potato listed in every entry except the 3rd entry. If the 4th entry is a kind of "checklist" why does removing one potato not make it red. Why is there no filler icon.

I must be misunderstand something.