[Webkit-unassigned] [Bug 215213] New: [iOS 14] MediaStream becomes inactive after video it was assigned to is removed from the DOM

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=215213

            Bug ID: 215213
           Summary: [iOS 14] MediaStream becomes inactive after video it
                    was assigned to is removed from the DOM
           Product: WebKit
           Version: Other
          Hardware: iPhone / iPad
                OS: Other
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Media
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: artjomvinnikov at gmail.com

OS: iOS 14 Beta 3

Steps:

1. Request a stream with getUserMedia and feed it into <video> via srcObject
2. Remove video from the DOM
3. After ~5 seconds camera stream becomes inactive. Camera recording icon gets hidden from url bar, and stream.active returns false.

Small demo to reproduce: https://codesandbox.io/s/smoosh-thunder-1frcl?file=/index.html

Not sure if this is desired behaviour, but it doesn't happen with Safari 13.

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