Why does turbo tax remove my son which is 19 living at home and not going to school as a dependent?

I am having an issue with the software where it asks questions about dependents.  When it gets to the section and asks Was he a Full-Time student in 2023?

 

If you are truthful and say no it removes him from every aspect of the dependent.  If you say yes then it keeps him on as a dependent and you get a $500 tax credit.  

 

This is a requirement on an medical insurance plan and he has to be listed as a dependent and without appearing on the list, he cant be on the plan even though the ACA says they don't need to go to school.