[Webkit-unassigned] [Bug 258116] New: Subtitles menu button does not update when mode is changed through the API when in fullscreen

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=258116

            Bug ID: 258116
           Summary: Subtitles menu button does not update when mode is
                    changed through the API when in fullscreen
           Product: WebKit
           Version: Safari 16
          Hardware: iPhone / iPad
                OS: iOS 16
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Media
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: jeroen.veltmans at theoplayer.com

Steps to reproduce:
1) Create a basic page with a video element that has a source with native text tracks
2) Make sure you are in native fullscreen
3) Change the text track mode by selecting the video element and executing "$0.textTracks[0].mode = 'showing'"

What is the expected behavior?
The subtitles menu shows the actual track mode that was set through the API.

What is the actual behavior?
The subtitles menu button isn't changed at all.

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