Navigator Behaviour

I have only one view, Home, and I have set the very view as the navigator’s error view.

When I try http://localhost/
It redirects to http://localhost/#!Home

My question is why VAADIN tries to enter Home view “twice”

If you see the browser history you can confirm this.
By the way my log shows this fact too.

Info: beforeViewChange: Current=
Info: beforeViewChange: To=Home
Info: afterViewChange: Current=Home

Info: beforeViewChange: Current=Home
Info: beforeViewChange: To=Home
Info: afterViewChange: Current=Home