[Webkit-unassigned] [Bug 203810] New: video becomes black after window.open()

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=203810

            Bug ID: 203810
           Summary: video becomes black after window.open()
           Product: WebKit
           Version: Safari 12
          Hardware: iPhone / iPad
                OS: iOS 12
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: WebRTC
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: seppe at vectera.com
                CC: youennf at gmail.com

Repro:

* Go to https://codepen.io/seppevectera/pen/WNNMOmV in iOS Safari
* Click "Start video" -> a getUserMedia() MediaStream is shown
* Click "Open empty tab" -> a blank tab is opened
* Go back to the codepen tab without closing the empty tab

Expected result: the video is still playing.
Actual result: the video is black.

When you close the empty tab using the x button, the video resumes. When you close the empty tab by going to the tab overview and swiping the empty tab away, the video stays black.

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