topic When enhanced contrast is enabled on macOS and playing videos in fullscreen in Firefox, a horizontal line appears at the top of the screen! I hope this issue can be fixed. in Discussions https://connect.mozilla.org/t5/discussions/when-enhanced-contrast-is-enabled-on-macos-and-playing-videos-in/m-p/138400#M56183 <P>When enhanced contrast is enabled on macOS and playing videos in fullscreen in Firefox, a horizontal line appears at the top of the screen! I hope this issue can be fixed.</P> Tue, 15 Sep 2026 15:05:10 GMT haifeng 2026-09-15T15:05:10Z When enhanced contrast is enabled on macOS and playing videos in fullscreen in Firefox, a horizontal line appears at the top of the screen! I hope this issue can be fixed. https://connect.mozilla.org/t5/discussions/when-enhanced-contrast-is-enabled-on-macos-and-playing-videos-in/m-p/138400#M56183 <P>When enhanced contrast is enabled on macOS and playing videos in fullscreen in Firefox, a horizontal line appears at the top of the screen! I hope this issue can be fixed.</P> Tue, 15 Sep 2026 15:05:10 GMT https://connect.mozilla.org/t5/discussions/when-enhanced-contrast-is-enabled-on-macos-and-playing-videos-in/m-p/138400#M56183 haifeng 2026-09-15T15:05:10Z