[Webkit-unassigned] [Bug 198277] New: Audio stops playing when standalone web app is no longer in foreground

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=198277

            Bug ID: 198277
           Summary: Audio stops playing when standalone web app is no
                    longer in foreground
           Product: WebKit
           Version: Safari 12
          Hardware: iPhone / iPad
                OS: iOS 12
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Media
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: wes at wespeter.com

Simple repro site at https://ios-standalone-bug.backgroundnoise.app

1. Write a web app that Includes an HTML <audio> element
2. Pin it to home screen on iOS with display:standalone in manifest.json
3. Launch the web app
4. Play the audio
5. Leave the web app

Expected:
Audio keeps playing

Actual:
Audio stops playing.

NOTE: If you play the audio in Safari and leave Safari it keeps playing in the background. This only affects standalone web apps/PWAs

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