Do not compute region range for a box unless the parent has one because otherwise we may end up with a wrong range leading to undesired effects, like incorrect clipping.
Created attachment 226734 [details] Patch
Comment on attachment 226734 [details] Patch r=me
Comment on attachment 226734 [details] Patch Clearing flags on attachment: 226734 Committed r165720: <http://trac.webkit.org/changeset/165720>
All reviewed patches have been landed. Closing bug.