MAI: Odd behavior on connector settings UI

Description

Steps to reproduce
1) Go to any connector's Admin settings screen, for example, Admin -> Config -> Microsoft Dynamics CRM.
2) Add settings and save.
3) Refresh the page.
4) Click Add Connector. An empty settings box appears.
5) Without saving anything, click the Microsoft Dynamics CRM link in the left navigation. The empty settings box remains on the screen.
6) Click the "Microsoft Dynamics CRM" link again. The empty settings box disappears.

Expected
The empty settings box disappears after the first click on the Microsoft Dynamics CRM link.
Also, after the first click, when the empty settings box remains on the screen, if valid values are entered and "save" button is clicked, the box disappears, leaving only the previously saved settings box on the screen. That is, the new instance is not saved.

Actual
See steps to reproduce