I tested the OSIO login feature and it works pretty well. But one thing should be fixed I think. When you click the icon and the login browser window is opened and then you change your mind and click Close on the window, you're given an error:
Error login to cluster OpenShift.io

I think in the case of the user closing the window there shouldn't be an error like this.

I understand that we do need some form of indication if the username is correct (so the webpage accepts it), but the login in devstudio fails somehow. In this case it is correct to display an error.