We currently don't invalidate scrollbars when e.g a -webkit-scrollbar property is changed.
Created attachment 230760 [details] Patch
Comment on attachment 230760 [details] Patch Clearing flags on attachment: 230760 Committed r168230: <http://trac.webkit.org/changeset/168230>
All reviewed patches have been landed. Closing bug.
Comment on attachment 230760 [details] Patch Does this work for custom overflow:scroll scrollbars?
(In reply to comment #4) > (From update of attachment 230760 [details]) > Does this work for custom overflow:scroll scrollbars? Yeah, the layout test uses overflow:scroll on a div to test that as well.