Bug 212780 – audio (and sometimes video) element get paused and stays paused when another app uses audio

• Status: NEW
• Component: Media

Some audio (and sometimes video) elements stay in paused state even after Safari gains foreground.

To repro this issue check out sample app @ https://makarandp0.github.io/safariAudioGetsPaused/

Steps
1) Click "Synthetic Audio" - This will create an audio track local and remote (using webrtc) and attach them to audio elements.
2) Go to Youtube (or other application) and play some content - Notice that audio elements on sample page gets paused - which is Okay.

3) Go back to Safari - 
Actual: notice that Local Audio Track starts playing but Remote Audio Element stays muted.
Expected: Both audio elements should receive "play" event and start playing.

I have seen this with both audio and video tracks, both synthetic and the ones obtained using `getUserMedia`.

[Radar WebKit Bug Importer]

<rdar://problem/64094978>