Clicking "Dispenser" in recipe book puts ingredients for "Dropper" into the crafting bench

Gather ingredients for crafting a dispenser. Assume recipe for Dispenser is available in recipe book. Clicking Dispenser in recipe book instead puts the ingredients for Dropper in the crafting area (same set of ingredients minus the bow in the middle slot)

FWIW: Clicking Dropper in the recipe book works as expected. Also crafting a dispenser manually works as expected.