textTracks.onchange event is not firing
External Issue #8019792
Steps to reproduce
Visit:
http://demo.jwplayer.com/browser-examples/edge-tracks-change.html
This page has an event listener for textTracks.onchange. An alert should appear when this event is triggered.
1 - Begin video playback
2 - Change Closed captions
Expected behavior:
An alert should appear, displaying that the track has been changed.
Actual behavior:
No alert appears in Edge. (But does in Safari and Chrome)
This is needed by our video player to control the display of captions via our own control bar. It also appears to affect VTT captions and 608 embedded captions in HLS streams.
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