CallsBestMatchView is not updated properly when a contact's phone number is changed in Contacts
Changing a matching contact's phone number in Contacts makes the best match disappear:
** (sm.puri.Calls:3397): DEBUG: 14:10:12.537: Best match property notified ** (sm.puri.Calls:3397): DEBUG: 14:10:12.541: Best match disappeared
However, changing the phone number back again does not make the match reappear.
This may be a bug in libfolks.