[Webkit-unassigned] [Bug 187227] New: Cloned MediaStream audio attached to peer connection causes local echo

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=187227

            Bug ID: 187227
           Summary: Cloned MediaStream audio attached to peer connection
                    causes local echo
           Product: WebKit
           Version: Safari 11
          Hardware: iPhone / iPad
                OS: iOS 11
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: WebRTC
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: webkit at xylil.com
                CC: youennf at gmail.com

1. Peer connection with inbound/outbound audio/video stream attached to a video element
2. Clone the stream to re-use on another peer connection, and attach to other audio/video elements
3. Hide the first video element

This results in a local echo coming from the user's own microphone, not from any inbound audio.

What's really weird is that if I display the first video element again, the echo goes away and doesn't return.

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