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Slowly fullscreen animation with transparent tabbar

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here is the video: https://streamable.com/zffknq the issue is about transparent bar with vertical addons and slowly fullscreen animation, and the fullscreen animation isn't config-able, I already set full-screen-api.transition-duration.enter 0 0 full-screen-api.transition-duration.leave 0 0 in about:config, and disable sidebar or userChrome is not work too. and this is happend about one mouth ago after my nixos update firefox.

here is the video: https://streamable.com/zffknq the issue is about transparent bar with vertical addons and slowly fullscreen animation, and the fullscreen animation isn't config-able, I already set full-screen-api.transition-duration.enter 0 0 full-screen-api.transition-duration.leave 0 0 in about:config, and disable sidebar or userChrome is not work too. and this is happend about one mouth ago after my nixos update firefox.
Attached screenshots

Chosen solution

add

           #navigator-toolbox[fullscreenShouldAnimate] {
               transition: none !important;
           }

to userChrome.css fix the animation.

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All Replies (1)

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Chosen Solution

add

           #navigator-toolbox[fullscreenShouldAnimate] {
               transition: none !important;
           }

to userChrome.css fix the animation.