[Webkit-unassigned] [Bug 246340] New: [iPhone 14] Incoming and outgoing audio disappears for WebRTC call if the User goes to another app, plays a video and navigates back to browser

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=246340

            Bug ID: 246340
           Summary: [iPhone 14] Incoming and outgoing audio disappears for
                    WebRTC call if the User goes to another app, plays a
                    video and navigates back to browser
           Product: WebKit
           Version: Safari 16
          Hardware: iPhone / iPad
                OS: iOS 16
            Status: NEW
          Severity: Major
          Priority: P2
         Component: WebRTC
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: madara.freimane at testdevlab.com
                CC: youennf at gmail.com

Summary:
Incoming and outgoing audio disappears for WebRTC call if the User goes to another app, plays a video and navigates back to browser


Tested devices and browsers:
Bug is reproducible on:
- iPhone 14 (16.02, build: 20A380) with Safari
- iPhone 14 (16.0.3, build: 20A392) with Safari

Bug is not reproducible on:
- iPhone 12 Pro Max (16.0, build: 20A362) with Safari
- iPhone 11 (16.02, build: 20A380) with Safari
- iPhone 11 (16.03, build: 20A392) with Safari

Use case:
Preconditions:
Users are in active WebRTC video call

Steps:
1. User goes to YouTube and plays video OR goes to another app, for example, Facebook and plays a video
2. User navigates back to WebRTC call (opens Safari)

Actual result:
Incoming and outgoing audio disappears and User cannot unmute WebRTC call (unmute button not responding),
(Sometimes audio comes back after ~30sec-1min).

Expected result:
WebRTC call goes to unmuted state, when User opens Safari browser.

Reproducibility:
100%

Additional information:
-A sysdiagnostics file added:
https://drive.google.com/file/d/1_cixCCg_RUwPsTmCV7kD8YYGLjeKVaXl/view?usp=sharing

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