[Webkit-unassigned] [Bug 197864] Compositing overlap testing doesn't handle non-stacking context overflow scroll
bugzilla-daemon at webkit.org
bugzilla-daemon at webkit.org
Mon May 13 18:12:51 PDT 2019
https://bugs.webkit.org/show_bug.cgi?id=197864
Simon Fraser (smfr) <simon.fraser at apple.com> changed:
What |Removed |Added
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CC| |koivisto at iki.fi,
| |simon.fraser at apple.com,
| |zalan at apple.com
--- Comment #1 from Simon Fraser (smfr) <simon.fraser at apple.com> ---
overlapMap.push/popCompositingContainer() only knows how to handle overlap for things that are compositing container (generally, stacking context). It can't handle z-order siblings that have different clips in their containing block ancestor chain.
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