[Webkit-unassigned] [Bug 160781] New: Web Inspector: Uncaught Exception in Network tab when reloading a web page ('this._dataGrid.closed' is undefined)

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=160781

            Bug ID: 160781
           Summary: Web Inspector: Uncaught Exception in Network tab when
                    reloading a web page ('this._dataGrid.closed' is
                    undefined)
    Classification: Unclassified
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: All
               URL: https://webkit.org/nightly/start/trunk/204373/
                OS: All
            Status: NEW
          Severity: Critical
          Priority: P2
         Component: Web Inspector
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: nvasilyev at apple.com
                CC: bburg at apple.com, joepeck at webkit.org,
                    mattbaker at apple.com, nvasilyev at apple.com,
                    timothy at apple.com, webkit-bug-importer at group.apple.com

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Inspected URL:        https://webkit.org/
Loading completed:    true
Frontend User Agent:  Mozilla/5.0 (Macintosh; Intel Mac OS X 10_11_5) AppleWebKit/603.1.3+ (KHTML, like Gecko)

Uncaught Exceptions:
 - this._dataGrid.closed is not a function. (In 'this._dataGrid.closed()', 'this._dataGrid.closed' is undefined) (at NetworkGridContentView.js:157:30)
    closed @ NetworkGridContentView.js:157:30
    _disassociateFromContentView @ ContentViewContainer.js:476:27
    closeAllContentViews @ ContentViewContainer.js:339:46
    _networkTimelineReset @ NetworkSidebarPanel.js:183:70
    dispatch @ Object.js:162:30
    dispatchEventToListeners @ Object.js:169:17
    reset @ Timeline.js:80:42
    reset @ NetworkTimeline.js:41:20
    _mainResourceDidChange @ TimelineManager.js:807:50
    dispatch @ Object.js:162:30
    dispatchEventToListeners @ Object.js:177:21
    _dispatchMainResourceDidChangeEvent @ Frame.js:498:38
    commitProvisionalLoad @ Frame.js:140:53
    frameDidNavigate @ FrameResourceManager.js:105:40
    frameNavigated @ PageObserver.js:42:59
    dispatchEvent @ InspectorBackend.js:464:42
    _dispatchEvent @ InspectorBackend.js:358:32
    dispatch @ InspectorBackend.js:159:32
    dispatchNextQueuedMessageFromBackend @ MessageDispatcher.js:42:34

Additional Details:
    cause --> An uncaught exception was thrown while handling event: Page.frameNavigated
-------

* STEPS TO REPRODUCE
1. Open https://webkit.org/
2. Open Network tab.
3. Reload the page.

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