Created attachment 232818 [details] Test case To reproduce, open attached 501nodes.html and inspect the DOM. Click the "Show All Nodes" button while inspecting the inspector. [Error] TypeError: null is not an object (evaluating 'window.getComputedStyle(this._listItemNode).getPropertyCSSValue("padding-left").getFloatValue') isEventWithinDisclosureTriangle (TreeOutline.js, line 1067) treeElementToggled (TreeOutline.js, line 763)
<rdar://problem/17257964>
<rdar://problem/17257971>
Created attachment 233768 [details] [PATCH] Fix attempt.
Comment on attachment 233768 [details] [PATCH] Fix attempt. Clearing flags on attachment: 233768 Committed r170416: <http://trac.webkit.org/changeset/170416>
All reviewed patches have been landed. Closing bug.