Fix to follow.
Total problems found: 1. Popup renamed to Popover in half of the places, as a result, this._hidePopoverTimer is not getting removed. [regression] 2. contentElement.addEventListener("mousemove", this._popoverHelper._killHidePopoverTimer.bind(this._popoverHelper), true); was entirely forgotten and caused this [regression]. 3. Strange delete this._popupInstanceMarker in the code We will need to hold off commits like this in the future since they compromise the "polish" activity we are performing.
Created attachment 105366 [details] Patch
Comment on attachment 105366 [details] Patch View in context: https://bugs.webkit.org/attachment.cgi?id=105366&action=review > Source/WebCore/inspector/front-end/Popover.js:33 > + * @param {WebInspector.Popover} popoverHelper Popover -> PopoverHelper=?
Committed r93882: <http://trac.webkit.org/changeset/93882>