When viewing recipes, icons for items needed are not always shown.
When building the weaver’s spindle I had failed to notice there was the need for plants for thread. I had the plants harvested and delivered, however I had forgot to make thread. Then while double checking what I needed, noticed the missing icon.
Steps to reproduce:
At various steps the thread icon is missing in the required items, as shown in the screen shot document.
Work around tried:
It’s a play mechanic. Your guy has to figure it out kinda. It’s something from out side his specialty. Maybe if he was already level 2(?) with the co-op with other trades it would have shown. But later that failed when even after reaching the level it didn’t show up. (be a cool mechanic though)
Link to image: