[Webkit-unassigned] [Bug 241400] New: iOS Safari 15.5 auto disable microphone when lock screen

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=241400

            Bug ID: 241400
           Summary: iOS Safari 15.5 auto disable microphone when lock
                    screen
           Product: WebKit
           Version: Safari 15
          Hardware: iPhone / iPad
                OS: iOS 15
            Status: NEW
          Severity: Major
          Priority: P2
         Component: WebRTC
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: ddp.bkdn at gmail.com
                CC: youennf at gmail.com

With iPhone XS iOS 15.5, there is a new issue that started appearing.
If we let the iPhone auto-lock screen (after 30 seconds, 1 minute, etc.. depending on the settings display & brightness), the mic stops working, although the audio speaker still working.

Here are the steps to reproducer:
1. Open the link using WebRTC: https://it.dev-akameet.link/video/room/testbug or https://meet.jit.si/testbug
2. Join meetings and on the mic (off camera to auto-lock screen)
3. After an amount of time, iPhone will be locked screen.

Expected: Can hear and speak normally.

Actual: Can't speak via the mic, but can hear the others in the room.

Note: If unlock the Iphone's screen we can speak via the microphone can work normally.

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