[Webkit-unassigned] [Bug 160433] New: ASSERTION FAILURE: [[videoLayer delegate] isKindOfClass:getUIViewClass()] in WebAVPlayerLayerView_videoVie

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=160433

            Bug ID: 160433
           Summary: ASSERTION FAILURE: [[videoLayer delegate]
                    isKindOfClass:getUIViewClass()] in
                    WebAVPlayerLayerView_videoVie
    Classification: Unclassified
           Product: WebKit
           Version: WebKit Local Build
          Hardware: iOS
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Media Elements
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: dbates at webkit.org
                CC: eric.carlson at apple.com, jeremyj-wk at apple.com

Created attachment 285052
  --> https://bugs.webkit.org/attachment.cgi?id=285052&action=review
Test Case

When using a debug build of WebKit for iOS Simulator and simulating an iPad the assertion ASSERT([[videoLayer delegate] isKindOfClass:getUIViewClass()]) failed in WebAVPlayerLayerView_videoView when I closed a tab that contain a video that was in picture-in-picture mode.

Attached an archive with a test case that can be used to demonstrate this issue. Unzip the attached archive into a web-accessible directory, open Mobile Safari and navigate to TestCase/close-page-with-picture-in-picture-video-assertion-failure.html. Follow the instructions to reproduce this issue.

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