[Webkit-unassigned] [Bug 168054] REGRESSION (r211845): [ios-simulator] LayoutTest compositing/masks/solid-color-masked.html is a flaky failure

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=168054

--- Comment #7 from Simon Fraser (smfr) <simon.fraser at apple.com> ---
Actually GraphicsLayerCA::setVisibleAndCoverageRects() copies the m_intersectsCoverageRect flag to the mask layer.

The bug happens when GraphicsLayerCA::setVisibleAndCoverageRects() is called for the masked layer before it has a mask. After than, assigning the mask doesn't ever update the mask's m_intersectsCoverageRect.

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