Primary location does not update unless there is info in address field

I add a new email to a contact in a home location.

I want this to be the primary way of contacting him.

I try and change to home to be the primary location but it doesn't allow be to do this unless I have address information here. But I only communicate with this contact via email so know or want to add any address information.

I replicated this on demo at http://drupal.demo.civicrm.org/civicrm/contact/view?reset=1&cid=34

Possibly linked to: http://issues.civicrm.org/jira/browse/CRM-2435