Chickens never show up inside the coop

I found from other gameplay reviews that when it's 5 AM, Rooster will show up for a wake-up call. But in my game, it never appears. Only has a sound.

Moreover, hens never come to sit and lay eggs in the place I drew red circles.

They still show up walking outside the coop. My problem is that they don't show up relaxing in the coop. I don't know if it's only in the game or it's a current visual glitch.

If there is a way to fix it, please let me know how to do it. Thank you so much!