Unable to create multiple repos per team project in TFS 2015

• I have installed Team Foundation Server Update 1 on one of my servers.
• I have created a new team project using git as the source control type. I am trying to add another repo to the same project. I have read up on how I should be able to do that here.
• When I attempt to follow the steps, no new repo is created, no error is generated, and the pop-up window just retains its state on the screen with no indication of success or failure (Screenshot below - UI is still responsive, and I can cancel, but clicking "Create" any number of times produces no result).
• I'm not even sure how to troubleshoot this since there is no exception message, so any help is appreciated.

Looks like a bug to me. I would raise a support request with MSFT on: https://www.visualstudio.com/support/support-overview-vs

Things to try:

1. Have you tried closing your browser, clearing your cache?
2. Log out, clear your cache and close your browser?
3. Different browser?

All should be unnecessary... But you never know