When a Villager isn't on Bed, trying to click it cannot drive him away but shows "This Bed is occupied" instead

A Villager doesn't wake up for some reason when he isn't on Bed but still falls asleep. When trying to use the bed the Villager lays, you cannot drive him away but shows "This Bed is occupied."(这张床已被占用) In normal, however, you'll wake the Villager up instead.