Filtered elements need to control the repaint rectangle because of the outsets that some filters need (ie. blur, drop-shadow). There's some code in RenderBox::computeRectForRepaint (and RenderInline::computeRectForRepaint) that handles that, but when a LayoutState is enabled, a faster path is used instead. Disable the fast-path for filtered elements like we do for transforms.
80323 will remove the need to disable layout state. *** This bug has been marked as a duplicate of bug 80323 ***