Cannot inline edit when a join is used in 4.7.2, works fine in 4.2.5

Steps to reproduce

1. Run a basic inner join on any two tables (both have a column id which is the PK) e.g.
   SELECT a.* FROM a JOIN b ON b.id = a.org_id WHERE b.title = 'something'
2. I ran the same query in two different versions of phpmyadmin that connect to the same database. The edit/copy/delete options appear in 4.2.5, however the exact same query does not show these option in v4.7.2

SELECT message.* FROM message JOIN user ON message.user_id = user.id WHERE user.username != '' https://github.com/phpmyadmin/phpmyadmin/issues/12625#issue-181894158

Expected behaviour

Edit/Copy/Delete should appear to the left of each id, it does not appear in version 4.7.2, but does appear in the older version.

Actual behaviour

The following message is displayed: "Current selection does not contain a unique column. Grid edit, checkbox, Edit, Copy and Delete features are not available." edit/copy/delete options appear does not appear.

Server configuration

Linux
Centos 6
MySQL - 5.5.42
PHP version: 5.5
phpMyAdmin version: 4.7.2
Browser: Chrome & Firefox
Operating system: Windows 8

Reproduce the reported join queries against the stated MySQL and phpMyAdmin versions, then trace the unique-column detection used for query results. Compare the behavior with version 4.2.5 and review the linked pull request history; done means Edit, Copy, Delete, and row checkboxes appear for valid joined results without the unique-column warning.