Once a remote directory is opened in a panel, there’s no easy way to navigate to the root of the remote FS, as clicking the first breadcrumb entry navigates to the remote home directory.

Reproducible: Always

Steps to Reproduce:
1. Open Dolphin, start editing the navigation bar contents by typing sftp://remotehost.example/, press the Accept button.
2. Dolphin shows the content of the root of the remote FS.
3. Navigate to any directory.
Actual Results:  
The navbar shows, for example:
sftp: remotehost.example > srv > music
One can’t get to the root any longer except by clicking the “srv” part and then pressing Alt+Up. The “sftp: ...” part gets one to /home/remoteuser rather than to /.

Expected Results:  
The leftmost part of the breadcrumb navigation should correspond to the remote root rather than the remote home directory.