Sims cannot sleep during a slumber party

I recently had a slumber party for the first time after getting Growing Together on release. I was able to successfully complete all of the slumber party tasks with the exception of “get some sleep”. There was no option on either the sleeping bag or the bed to “sleep”. “Nap” was the only option and this did not complete the event requirement. 

The slumber party actually disabled the “sleep” option for all sims in the household, not just the sim who was attending the party. I had to end the event and reload the lot (I did not save when going to Manage Worlds) to be able to send my sims to sleep at 5 AM. 

Additionally, it feels silly to me that children cannot organize slumber parties when it is an event required for the first level of one of the children’s aspirations with Growing Together. I had to form a club and start a club gathering to be able to have my child sims adult mother meet the children in order to organize the slumber party. This feels like entirely too many steps that could be easily solved if the child was able to organize a slumber party in their own.