[Webkit-unassigned] [Bug 189717] New: Video 'ended' event sometimes doesn't fire

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=189717

            Bug ID: 189717
           Summary: Video 'ended' event sometimes doesn't fire
           Product: WebKit
           Version: Safari 11
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Event Handling
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: modmaker at google.com

When using MSE (not sure if it happens with src=), a <video> element will sometimes not fire the 'ended' event when the video ends.  It will still report that it has ended with |video.ended| property and the video stops.

If you go to the following repro page, it will load an MSE video and play to the end.  If it gets the 'ended' event, the page will refresh.  This may take many tries, it happens less than 1 in 20 times.  If the page doesn't refresh, it means it didn't get the 'ended' event.

https://storage.googleapis.com/shaka-demo-assets/_bugs/safari-ended-event/ended.html

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