Please always put in some text in questions, assuming people will watch your screencast isn't very considerate. Try to Reset Firefox [[Reset Firefox – easily fix most problems]]

Try to open a new window to see if the location bar works better in that new window.<br /> If that works then you can close the not working window. See also: *http://kb.mozillazine.org/Prevent_websites_from_disabling_new_window_features *http://kb.mozillazine.org/JavaScript#Advanced_JavaScript_settings ----- Start Firefox in <u>[[Safe Mode|Safe Mode]]</u> to check if one of the extensions (Firefox/Firefox/Tools > Add-ons > Extensions) or if hardware acceleration is causing the problem (switch to the DEFAULT theme: Firefox/Firefox/Tools > Add-ons > Appearance). *Do NOT click the Reset button on the Safe Mode start window. *https://support.mozilla.org/kb/Safe+Mode *https://support.mozilla.org/kb/Troubleshooting+extensions+and+themes You can check for problems caused by a corrupted localstore.rdf file. *http://kb.mozillazine.org/Corrupt_localstore.rdf