Mozilla/5.0 (Windows NT 5.1; rv:2.0b12pre) Gecko/20110217 Firefox/4.0b12pre Typing the address of an already open tab offers it in the autocomplete results ("switch to tab"). If the same url has been opened multiple times and shows different content (due to iframes, javascript etc.), "switch to tab" offers only one of those tabs end selecting it will jump to a different one than that one. Steps to reproduce: 1. Start Firefox. 2. Open http://maps.google.com in the location bar. 3. Search there for Toronto. 4. Open a new tab and load http://maps.google.com 5. Open a new tab and type "maps". Actual result: Only one tab offered with title "Google Maps". Selecting it will set the focus to the first tab which has the title "toronto - google maps". Expected results: At least to set the focus to the tab whose title is shown in switch to tab, furthermore preferring to see all matching tabs in switch to tab.