Contacts - show ungrouped contacts not there in 15.0.? (contacts v. 3.0.1)

in earlier versions of “contacts”, there was a switch to show all ungrouped contacts (contacts with no associated group), in 15.0. that’s not available anymore. Is there a way to bring back that switch? I found it very useful to show only the contacts without groups, it helped setting the group(s) quickly.

Best Regards,