Why can't I sleep straight in bed?

First of all, I don't have any screenshots, so please understand the lack of explanation. After I came down from the pillar, I was tired of sleeping, so I jumped to the bed and clicked on the bed, and I jumped out of bed and slept on the floor. Even if it doesn't bounce to the floor, it sleeps in the wrong position in bed. Fix it~!

Ah! By the way, I used a translator because I am not good at English yet. My writing may sound strange.