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`.
<rdar://problem/64094978>