[Webkit-unassigned] [Bug 233707] New: Safari freezes when navigating to Youtube and back on device with iOS 15.0.2/15.0/15.1

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=233707

            Bug ID: 233707
           Summary: Safari freezes when navigating to Youtube and back on
                    device with iOS 15.0.2/15.0/15.1
           Product: WebKit
           Version: Safari 15
          Hardware: iPhone / iPad
                OS: iOS 15
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: WebRTC
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: madara.freimane at testdevlab.com
                CC: youennf at gmail.com

Created attachment 445579

  --> https://bugs.webkit.org/attachment.cgi?id=445579&action=review

sysdiagnose_2021.12.01_14-36-25+0200_iPhone-OS_iPhone_19A404.tar.gz

Summary: 
Safari freezes when navigating to Youtube and back on device with iOS 15.0.2/15.0/15.1


Tested devices:
Bug is reproducible on:
*iPhone 11 Pro Max | 15.0.2
*iPhone 13 | iOS 15.0
*iPhone 12 Pro Max | iOS 15.1
*iPhone XS | iOS 15.1


Bug is not reproducible on:
*iPhone XS Max | iOS 14.6
*iPhone 13 | iOS 15.2 Beta 3


Scenario:
Precondition:
Active WebRTC call

Steps:
1. Put browser in the background
2. Open Youtube app
3. Play a song
4. Put Youtube app in the background
5. Relaunch Safari

Actual result:
Safari freezes when navigating to Youtube and back to the active WebRTC call. The only way to stop this behaviour is by reloading the page.


Expected result:
Safari is usable


Reproducibility:
80%

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