Full screen does not work anymore.
Help! I click on full screen and the menu bar totally disappears (until I am out of full screen) but the toolbar is still there! It would previously disappear until I put my mouse on the top part of the screen. It simply stopped working just now all of a sudden while watching youtube. So, I deleted my temporary files, cookies, etc. and rebooted my computer. It did not solve problem. I am using Windows XP. That top toolbar is going to burn into my computer screen!!! Help!
When you are in full screen mode right-click empty space on a toolbar and set a checkmark on "Hide Toolbars".
Alternatively you can check the browser.fullscreen.autohide pref on the about:config page and set the pref to true if it is currently false.