[Webkit-unassigned] [Bug 242828] New: REGRESSION (iOS 16 Beta 3) Video and audio are broken for WebRTC call after intervention if User enables Siri, receives PSTN call or navigates to Youtube

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=242828

            Bug ID: 242828
           Summary: REGRESSION (iOS 16 Beta 3) Video and audio are broken
                    for WebRTC call after intervention if User enables
                    Siri, receives PSTN call or navigates to Youtube
           Product: WebKit
           Version: Other
          Hardware: iPhone / iPad
                OS: Other
            Status: NEW
          Severity: Critical
          Priority: P2
         Component: WebRTC
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: madara.freimane at testdevlab.com
                CC: youennf at gmail.com

Created attachment 460942

  --> https://bugs.webkit.org/attachment.cgi?id=460942&action=review

sysdiagnose_2022.07.15_16-05-57+0200_iPhone-OS_iPhone_20A5312j.tar.gz

Summary:
Video and audio are broken for WebRTC call after intervention if User enables Siri, receives PSTN call or navigates to Youtube while in the active WebRTC call

Tested devices:
Bug is reproducible on:
-iPhone 11 Pro Max | iOS 16 Beta 3 (20A5312g)
-iPhone 13 | iOS 16 Beta 3 (20A5312g)

Bug is not reproducible:

-iPhone XR | iOS 15.5 official

Scenario:
Precondition:
User is in active WebRTC call

Steps:
1. iOS 16 User enables Siri / receives PSTN call / navigates to Youtube

Actual result:
Video and audio are broken after interruption (if User enables Siri, receives PSTN call or navigates to Youtube).
Audio and video sometimes is broken, other User is not able to hear / see User

(even we restart the browser, the next call will be without camera)

Expected result:
Video and audio still works after interruption (if User enables Siri, receives PSTN call or navigates to Youtube).
Audio and video sometimes is broken, other User is not able to hear / see User

Reproducibility:
80%

Additional information:
Log file added in attachments (defect reproduced on 15.07.2022 at 16:06 CEST)

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