Sim goes to sleep on a bench instead of using the bed

I noticed that my Sim doesn’t go to bed when I try to make him sleep with his wife. Instead, he goes to sleep on a bench. His relationship with his wife is good. Only repeating the action manually makes him go to bed properly.

And when one of the spouses wakes up and gets out of bed, the other one also wakes up and gets up, even though his energy bar isn’t full and he could still sleep.

No mods, no cc. PC.