Menu button sometimes resumes or restarts playback on tvOS

[defagos]

The menu button can sometimes resumes or restarts playback on tvOS, as noted by @svenduvoisin.

Issue type

Incorrect behavior

Environment information

• Library version: 6.1.0
• iOS / tvOS version: 14.2
• Device: Physical

Reproducibility

Always reproducible

Steps to reproduce

1. Play some content in Letterbox demo.
2. Pause playback with the Play / pause button on the remote or by pressing the interactive area.
3. Press the Menu button. Playback resumes (mostly only the first time, next attempts will work).

For a DVR livestream (e.g. Couleur 3) the stream is reset at the beginning, which is annoying.

[defagos]

Not a problem with AVPlayerViewController or SRGMediaPlayerViewController. I suspect that the fact we embed the player view controller as a child of another view controller might explain the issue, but this needs further investigation.