The user doesnt show up after admin approve the sign-up request

Hi Team:

I am trying to use jupyterhub api to auth the user sign up.
With admin user, In the authorize page , I can see the user is authorized . but I can see the new user in admin page only after this user login once. So is it a bug ? Can I use some api to make the user show up in the admin page withou logining at least once?