URL: https://video.vice.com/de/video/the-chinese-friends/56b4e8162f91349469c7df00?latest=1

Browser / Version: Firefox Mobile 59.0
Operating System: Android 7.1.1
Tested Another Browser: Yes

Problem type: Video or audio doesn't play
Description: Video controls don't display in full screen
Steps to Reproduce:

1. Navigate to: https://video.vice.com/de/video/the-chinese-friends/56b4e8162f91349469c7df00?latest=1
2. Play the video.
3. Wait for the advertisement to finish playing.
4. Tap the screen to activate the Video controls.

Expected Behavior

1. When entering full screen mode using Firefox Android, we should see the video controls at the bottom (same as Chrome Android).
2. In Chrome mobile the controls should be responsive to taps.

Actual Behavior

1. No controls are displayed in Firefox Android.
2. Controls aren't responding in Chrome once full screen in enabled.

Environment
Nexus 6
Android 7.1.1
Firefox 59+ and Chrome 65

Originally reported:
#8582

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