[Webkit-unassigned] [Bug 204120] Rendering artifacts when scrolling overlays

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=204120

--- Comment #7 from Simon Fraser (smfr) <simon.fraser at apple.com> ---
I think the bug is that RenderLayerBacking::setContentsNeedDisplayInRect() offsets the repaint rect by m_scrolledContentsLayer->scrollOffset(), but that might be ahead of the scroll position used to compute the repaint rect.

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