Let's say the name of my current account is
Open Finder Preferences, and set "New Finder window show" to
johndoe, and add it to sidebar. Then each time opening up Finder after a reboot or log out/in, it will display the full path on the Finder window (screenshot below).
Macintosh HD > Users > johndoe
Rather than display
johndoe as the relevant root, the behavior on OS X 10.7 and before (screenshot below).
However, close any Finder window and reopen, problem disappears. But after reboot and log out/in problem repeats.
Affecting systems: OS X 10.8 and 10.9, unknown on 10.10
Example (system root):
Example (relevant root):