and we paint the scrollbars on the main thread, causing flickering.
<rdar://problem/52308095>
theme().registerScrollbar(*this), called from Scrollbar's constructor, is trying to call virtual functions which RenderScrollbar overrides.
Created attachment 373131 [details] Patch
Comment on attachment 373131 [details] Patch Clearing flags on attachment: 373131 Committed r246934: <https://trac.webkit.org/changeset/246934>
All reviewed patches have been landed. Closing bug.