[Webkit-unassigned] [Bug 173339] New: Uncaught Exception: TypeError: null is not an object (evaluating 'this.treeOutline._visible')

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=173339

            Bug ID: 173339
           Summary: Uncaught Exception: TypeError: null is not an object
                    (evaluating 'this.treeOutline._visible')
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: All
               URL: http://pecoraro.apple.com/test-video/index2.html
                OS: All
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Web Inspector
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: joepeck at webkit.org
                CC: inspector-bugzilla-changes at group.apple.com

Steps to reproduce:
1. Loaded a test page with a video element
2. Inspected the video

-------
Uncaught Exceptions:
 - TypeError: null is not an object (evaluating 'this.treeOutline._visible') (at DOMTreeElement.js:413:64)
    _updateChildren @ DOMTreeElement.js:413:64
    _updateChildren @ [native code]
    getChildNodes @ DOMNode.js:465:25
    updateChildren @ DOMTreeElement.js:385:45
    _updateModifiedNodes @ DOMTreeUpdater.js:124:45
    performWork @ Utilities.js:1381:47
-------

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