The latest Safari version (6.0 (8536.25)) now hides the URL path from the address bar. Instead, it only showing the hostname (e.g. right now I only see "apple.stackexchange.com"). Clicking on the bar to edit will revert it to the full URL (e.g. apple.stackexchange.com/questions/ask).
Note that this is different to previous behavior where the URL path was still shown, albeit in a lighter shade of gray. Now it's completely gone, and only clicking will bring it back.
This is very annoying, and downright crippling when developing web applications. Is there a way to disable this behavior? I combed through the preferences dialog but couldn't find anything remotely related.