When I start my Magnolia, then stop it for a while I get a screen which says:

"Server connection lost, trying to reconnect" together with a small spinner.

When I restart my Magnolia Server the box stays, instead of redirecting me to the login page, as my Sessioncookie is gone.

From taking a look at the Network requests I get a 401 error and in the Ajax response the broswer receives the login page. There is just no reconnect or rendering of the markup on the client side.