It might seem like they are logged out, but actually users are still logged in technically (see globals cookie) after a page reload. I suspect the problem is located somewhere in the logged-in-check in index.html.
The "problem" was a known behaviour of $rootScope, values in $rootScope are cleared during page-refresh. Solution: read back "globals" cookie-value and re-set values in $rootScope.
It might seem like they are logged out, but actually users are still logged in technically (see globals cookie) after a page reload. I suspect the problem is located somewhere in the logged-in-check in index.html.