[Webkit-unassigned] [Bug 157955] New: Assertion Failed: StyleDetailsPanel.markAsNeedsRefresh() called with null domNode

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=157955

            Bug ID: 157955
           Summary: Assertion Failed:
                    StyleDetailsPanel.markAsNeedsRefresh() called with
                    null domNode
    Classification: Unclassified
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: All
                OS: All
            Status: NEW
          Severity: Normal
          Priority: P3
         Component: Web Inspector
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: mattbaker at apple.com
                CC: bburg at apple.com, graouts at webkit.org,
                    joepeck at webkit.org, mattbaker at apple.com,
                    nvasilyev at apple.com, timothy at apple.com,
                    webkit-bug-importer at group.apple.com

* SUMMARY
Assertion Failed: StyleDetailsPanel.markAsNeedsRefresh() called with null domNode.

* STEPS TO REPRODUCE
1. Open Inspector > Elements tab
2. Expand details sidebar, Styles — Rules panel
3. Reload Inspected page
  => [Error] Assertion Failed
    markAsNeedsRefresh (StyleDetailsPanel.js:77)
    visibilityDidChange (CSSStyleDetailsSidebarPanel.js:170)
    removeSidebarPanel (Sidebar.js:96)
    showDetailsSidebarPanels (ContentBrowserTabContentView.js:160)
    dispatch (Object.js:161)
    dispatchEventToListeners (Object.js:168)
    _dispatchCurrentRepresentedObjectsDidChangeEvent (ContentBrowser.js:437)
    _currentContentViewDidChange (ContentBrowser.js:478)
    dispatch (Object.js:161)
    dispatchEventToListeners (Object.js:168)
    closeAllContentViews (ContentViewContainer.js:348)
    _showDOMTreeContentView (ElementsTabContentView.js:101)
    _mainResourceDidChange (ElementsTabContentView.js:118)
    dispatch (Object.js:161)
    dispatchEventToListeners (Object.js:176)
    _dispatchMainResourceDidChangeEvent (Frame.js:497)
    commitProvisionalLoad (Frame.js:140)
    frameDidNavigate (FrameResourceManager.js:105)
    frameNavigated (PageObserver.js:42)
    dispatchEvent (InspectorBackend.js:448)
    _dispatchEvent (InspectorBackend.js:342)
    dispatch (InspectorBackend.js:151)
    dispatchNextQueuedMessageFromBackend (MessageDispatcher.js:42)

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