I've added a street address for one of my contacts in the stock Marshmallow contacts app.
However, the address only shows up as the second address, only visible if I tap "see all" at the bottom of the contacts details.
By default, the app shows a dummy address with just the country code (Australia in my case) and nothing else. The image below explains the problem better than words:
How do I get rid of that address? I don't see it among the editable fields when I modify the contact, so I don't know where it's coming from.