Administration Theme switches to front-end theme I am using administration theme "Seven".

When I clear cache or I work with some module and then I save its settings, the administration theme switches to front-end theme.

If i reload browsers current page, then the front-end theme switches back to the admin theme.

Is there any setting that can fix this?
Overlay does not work with prefixed URL paths.
http://drupal.org/node/1075096