[Webkit-unassigned] [Bug 200845] New: AX: ::cue pseudo elements are not correctly read by screen readers

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=200845

            Bug ID: 200845
           Summary: AX: ::cue pseudo elements are not correctly read by
                    screen readers
           Product: WebKit
           Version: Safari 12
          Hardware: All
                OS: All
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Accessibility
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: etripier at gmail.com
                CC: webkit-bug-importer at group.apple.com

VoiceOver has the ability to focus the ::cue pseudo element in a <video /> shadow root. However, it will only read the element the first time it is focused - if the content of the element changes (as is usually the case with subtitles), VoiceOver will not read the new content. This makes it almost impossible for a screen reader to correctly read subtitles in a video.

I think these ::cue pseudo elements should either be rendered with aria-hidden="true" (in which case they would not be read by screen readers) or aria-live="true" (which should read them as they are updated).

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