Administration - wrong return back to Jahia site

I have a problem sometimes, with the administration console of Jahia.

When I finish my administration work, I click on the "Exit 
Adlministration" button. And my browser return to a page with an URL of 
type : "http://localhost/jahia/..........".

How can I solve this problem ? Is there a configuration mistake ?
I'm using a Jahia 4.0.4 build 5822 version.

Thank's a lot.