The bug

When you open the recipe book in a crafting table or inventory, it opens the recipe book for both of them. Basically, if your recipe book is open on your inventory, it's open on the crafting table. if it's closed on your inventory, it's closed on your crafting table.
However the recipe book on the furnace is separate. So opening and closing it doesn't change anything else. So it's inconsistent.

How to reproduce

1. Open a crafting table
2. Note the state of the recipe book
3. Open your inventory
4. Change the state of the recipe book
5. Open a crafting table and see that it's state was changed