Make Sandbox/Preview Available Outside iFrame

The old infrastructure had this already.

I have apps that open new windows. With the old infrastracture you could open these new windows and you could login and it would work.

It also allowed you to have your app in preview mode available in a second screen.

With the new infrastructure, you cannot do this. It simply loads and loads because it is not setup for a login page in sandbox mode, and because when you open it outside the iframe it loses your login status.