State/province not copied on shared address

This is a regression as of 5.20.0. When editing one contact to share another contact's address, the state or province is not copied over. This happens whether using the inline form or the main contact edit form.

1. Select the address and see that everything's there:

   

2. Save and see that the state is missing:

   

For reference, when you have a contact Alice with and address and you edit Bob to share Alice's address, a new address entry is created for Bob and filled with Alice's address values plus a master_id relating to Alice's address. Later edits to Alice's address will update Bob's.

In the case in the screenshots, searching for contacts in Ijamsville will return both contacts,

while searching for contacts in Maryland will only return Rebekah:

Editing Rebekah's address triggers an update, and that updates both addresses accurately, including the state/province. The problem is specifically in the initial copy when you set up the shared address.