Where did you install Firefox from? Help Mozilla uncover 3rd party websites that offer problematic Firefox installation by taking part in our campaign. There will be swag, and you'll be featured in our blog if you manage to report at least 10 valid reports!

Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

Full screen video doesn't take up the entire screen on MacOS 12.5 unless Firefox is in full screen mode

  • 2 பதிலளிப்புகள்
  • 1 இந்த பிரச்சனை உள்ளது
  • 30 views
  • Last reply by Hami

When expanding any video to full screen mode, the video does not occupy the entire screen. However, if Firefox itself is in full screen mode, then the video will occupy the full screen.

I tested this on YouTube and another website's video player and was able to consistently replicate the issue.

See image to view the bug in action.

When expanding any video to full screen mode, the video does not occupy the entire screen. However, if Firefox itself is in full screen mode, then the video will occupy the full screen. I tested this on YouTube and another website's video player and was able to consistently replicate the issue. See image to view the bug in action.
Attached screenshots

Hami மூலமாக திருத்தப்பட்டது

தீர்வு தேர்ந்தெடுக்கப்பட்டது

Found a fix from someone on Reddit.

Go to about:config and change "full-screen-api.macos-native-full-screen" to True.

Works perfectly.

Read this answer in context 👍 1

All Replies (2)

Looks that Firefox adds a rounded border to make the player look nicer when you maximize the window and do not actually use full screen mode on Mac.

தீர்வு தேர்ந்தெடுக்கப்பட்டது

Found a fix from someone on Reddit.

Go to about:config and change "full-screen-api.macos-native-full-screen" to True.

Works perfectly.