_updateHoveredElement() removes and adds the "hovered" style class (perhaps on the same element) on every "mousemove" event
Created attachment 126054 [details] Patch
Comment on attachment 126054 [details] Patch View in context: https://bugs.webkit.org/attachment.cgi?id=126054&action=review > Source/WebCore/inspector/front-end/WatchExpressionsSidebarPane.js:293 > + candidateElement.addStyleClass("hovered"); Please check that candidateElement is not null here.
Committed r107076: <http://trac.webkit.org/changeset/107076>