It’s not a bug actually but rather a bad gameplay planning.
Experiment: Just for fun made Henry sleep for a very long time and after waking - consumed a couple of lullabies.
Result:
- energy is as low as zero
- eyelids are closing
- Henry is whinning about how tired he is
- Henry won’t sleep in the bed
After some walking and horsing around, I was able to put him in sleep for an hour, but the energy was still too low for the real activity. I think it’s a bug and lullabies must reset the sleep counter, like Melatonin does when you’re taking it for your jetlag.