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How to disable mouse cursor activating Menu & Address Bar in FullScreen?

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I like FullScreen a lot. But when I'm browsing the mouse cursor activates the Menu/Address bars if its moved to the top of the screen and everything moves down then up when the cursor is moved away. Is there a way of disabling this "feature"? I can bring up the Address Bar by using Alt_D anytime when in FullScreen. Couldn't see anything in about:config.

I like FullScreen a lot. But when I'm browsing the mouse cursor activates the Menu/Address bars if its moved to the top of the screen and everything moves down then up when the cursor is moved away. Is there a way of disabling this "feature"? I can bring up the Address Bar by using Alt_D anytime when in FullScreen. Couldn't see anything in about:config.

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Add code to the userChrome.css file below the default @namespace line to hide the full screen toggler.


@namespace url("http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul"); /* only needed once */

#fullscr-toggler { display: none !important; }

In Firefox 69 and later you need to set this pref to true on the about:config page to enable userChrome.css and userContent.css in the chrome folder.

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