[Webkit-unassigned] [Bug 245831] New: [iPhone 14] Safari freezes when User receives incoming WebRTC call

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=245831

            Bug ID: 245831
           Summary: [iPhone 14] Safari freezes when User receives incoming
                    WebRTC call
           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:
Safari freezes when User receives incoming WebRTC call

Tested devices:
Bug is reproducible on:
* iPhone 14 | iOS 16.0, build: 20A357
* iPhone 14 | iOS 16.0.2, build: 20A380

Bug is not reproducible on:
* iPhone 13 | iOS 16.0, build: 20A362
* iPhone 13 | iOS 16.0.2, build: 20A380
* iPhone 11 | iOS 16.0.2, build: 20A380 

Scenario:
Precondition:
Safari browser opened
App that supports WebRTC call opened

Steps:
1. User receives an incoming WebRTC call
2. User accepts the call using VIDEO option (VIDEO option - to be able share outgoing video with other participants in the call immediately when call is accepted)

Actual result:
Safari freezes when User receives WebRTC call and answers a call using VIDEO option

Expected result:
Safari does not freeze when User receives WebRTC call and answers a call using VIDEO option

Reproducibility:
70%

Additional information:
-Bug is reproducible in a case when we receive a call second, third or 4th time, we do not see this defect if we receive incoming call for the first time.
-Sysdiagnostics file added here (recorded on iPhone 14, time: 2022.09.28_18-05-43, EEST, GMT+3):
https://drive.google.com/file/d/1FHYHJ7rm4ji9fAvwV_PkUATO524Jkdx4/view?usp=sharing

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