While playing videos, when user tap on 'Closed captions' and 'Video Speed', app do not show closed captions and video speed options.
1) Login to edX app.
2) Select any course.
3) Tap on any section containing videos.
4) Tap to play any video.
5) Tap on the wheel icon.
6) Tap on 'Closed Captions' / 'Video Speed' and view.