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How do I stop Firefox from shifting the website down when using the auto-hide tab bar in full-screen?

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Firefox is in full-screen. Tab bar is on auto-hide, and when I change tabs by moving the mouse to the upper screen border, the whole current website shifts down to make room for the tab bar. Is it possible to change this so the website frame does not shift?

Firefox is in full-screen. Tab bar is on auto-hide, and when I change tabs by moving the mouse to the upper screen border, the whole current website shifts down to make room for the tab bar. Is it possible to change this so the website frame does not shift?

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Hello myzzzl, this is normal behavior in full screen mode, you can set the browser.fullscreen.autohide in about:config to False, to change that, but if you do that tabs and location bar is enabled in full screen mode.

wait if another contributor/helper give you a code which I don't know.


thank you