After editing a contact, blank "Unnamed Person" card shown

In openQA automated testing of Contacts - confirmed with both 43-rc and 43.0 - after the test edits the email address and phone number of an existing contact and hits Done, Contacts shows a blank card for a contact named "Unnamed Person":

This result seems consistent across multiple runs of the test. The test creates six contacts, then attempts to edit one of them (Jane Austen), and encounters this issue.