Once clicked once, the recipe book stays highlighted blue until the inventory is closed, or an option in the book is clicked. While highlighted, closing the book or clicking another item/slot in the inventory will do nothing, and pressing [enter] or [spacebar] will trigger the recipe book again, as if it was clicked again. (This will still not deselect the book, though)

Steps to Recreate:

• Open your inventory or a crafting table
• Click on the recipe book
• Congratulations!