Add server succeeds with bogus username & password.

I installed membase on one of my servers, and went to the admin UI on my existing cluster and pressed "add server". It prompts me for an address username and password. I did not go through the configuration steps on the node, so there is no username / password configuration on the node. The UI force me to specify the username and password, but it works no matter what I add for username / password.

To me this doesn't make any sense. If I enter a username / password combination I expect it to check it, and fail if it is incorrect.