[Webkit-unassigned] [Bug 236961] New: iOS Safari 15 can't hearing voice after notification sound from another app while connected bluetooth headset

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=236961

            Bug ID: 236961
           Summary: iOS Safari 15 can't hearing voice after notification
                    sound from another app while connected bluetooth
                    headset
           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

Problem:
We have encountered an issue that during a WebRTC conference, when we connected an iPhone with third-party Bluetooth (e.g Inpod12, Xiaomi, etc...) and joined a call, we can't hear the voice after notification sound from another app (e.g Messenger, Facebook, Gmail, etc..)

Test environment:
- Device A, iPhone 12 Pro iOS: 15.1, Safari mobile browser
- Device B, whatever desktop/mobile browser

Steps to Reproduce:
1. Connect a Bluetooth device, I reproduced using Bluetooth Inpods 12.
2. Open our product link: https://it.dev-akameet.link/video/room/demo
3. Provide permissions to choose media devices.
4. Click the button "Join".
5. During the call on safari, when notifications sound from another app is coming on Device A, Device A can't hear the voice from Device B even though the state of Bluetooth is still connected. 

*Note: We also test on https://meet.jit.si/

Expected results:
The voice should be normal after notifications sound stoped

This has been tested and reproduced on:
- Safari on iOS 15.2 on an iPhone XR

We have not yet found any work around this, so please let us know if we have to provide more information or if you have any suggestions.

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