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Fullscreen Black Bars

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Hi! I just moved over to Firefox from a different browser, and there this minor thing that I noticed. Whenever I put a video on full screen, it looks like it alters the aspect ratio of my screen? Like there are black bars at the left and right of my screen instead of it filled all the way. Its very minor but it bugs me every time. Is there a way to fix this or not? Thank you!

I am using a Macbook Air M2 btw.

Hi! I just moved over to Firefox from a different browser, and there this minor thing that I noticed. Whenever I put a video on full screen, it looks like it alters the aspect ratio of my screen? Like there are black bars at the left and right of my screen instead of it filled all the way. Its very minor but it bugs me every time. Is there a way to fix this or not? Thank you! I am using a Macbook Air M2 btw.

Solution choisie

Go to about:config in the address bar and try changing the value of full-screen-api.macos-native-full-screen to true.

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Solution choisie

Go to about:config in the address bar and try changing the value of full-screen-api.macos-native-full-screen to true.

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Thank you! That worked!