I have four cooking stations set to priority 8/9 cooking only pepper bread. Occasionally dupes will just stop delivering peppernuts to them until i cancel and requeue the item. I'll have plenty of both items available, and sometimes even have dupes idle, so i know theyre not busy with other tasks. They are just simply ignoring it.
Edit: on closer examination i realized that peppernuts are rotting in the cooking station between sleet harvests, and dupes don't realize that they need to deliver more
Steps to Reproduce
Let dupes deliver one of the ingredients and let it rot in cooking station, dupes dont realize they need to deliver more and the station just gets stuck on Work pending
This issue has not been confirmed by a developer yet.