STR: 1. Start a HTTP server listening on a local port (or a remote port on a server you can access). e.g.: type "hg serve" in your m-c clone. (starts a server on localhost:8000) 2. In a fresh Firefox profile, visit http://localhost:8000 (or your server's URL/port) 3. In a new tab, start typing in "localhost" ACTUAL RESULTS: The location bar gets autocompleted to "localhost/", where there is no HTTP server listening. (So, if I accept the autocomplete & hit "enter", I get a network error page.) EXPECTED RESULTS: Location bar should autocomplete to "localhost:8000/", which is the only version of this host that I've visited in the past. (I originally thought this might be a Places bug, but I think Places is storing the URL correctly. At least, the suggested URL in my location bar's dropdown menu has the correct port number. It's only the autocompleted url *in the location bar* that is lacking a port number.)