[Webkit-unassigned] [Bug 155671] New: Uncaught Exception: TypeError: undefined is not an object (evaluating 'this._treeOutlineDataGridSynchronizer.treeElementForDataGridNode')

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=155671

            Bug ID: 155671
           Summary: Uncaught Exception: TypeError: undefined is not an
                    object (evaluating
                    'this._treeOutlineDataGridSynchronizer.treeElementForD
                    ataGridNode')
    Classification: Unclassified
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: All
                OS: All
            Status: NEW
          Keywords: InRadar
          Severity: Normal
          Priority: P2
         Component: Web Inspector
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: joepeck at webkit.org
                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

Uncaught exceptions:
 - TypeError: undefined is not an object (evaluating 'this._treeOutlineDataGridSynchronizer.treeElementForDataGridNode') (at TimelineDataGrid.js:318:72)

* STEPS TO REPRODUCE
1. Open Inspector
2. Record a timeline with some data
3. Stop the recording
4. Show a Timeline Data Grid (Scripts / Layout & Rendering)
5. Attempt to change sort of a column
  => Exception

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