Tried to reproduce but didn't get the issue triggered. Maybe it's related to arrow batch size and different feather availability.
I tried crafting 2 arrows, having 2 mallard feathers and 6 swan feathers in character's inventory. It worked as intended and consumed all the feathers.
Can you try to reproduce again and let me know exactly what kind of batch with what feathers was made.
It would be even better if you'd first obtain the materials, then save the game and backup the folder.
Then try to reproduce the bug and if the issue is triggered send me that save backup so I can try it on my end.