Bug 258212

Summary:	REGRESSION(259592@main): wpt/css/CSS2/stacking-context/composite-change-after-scroll-preserves-stacking-order.html
Product:	WebKit	Reporter:	Sam Sneddon [:gsnedders] <gsnedders>
Component:	Scrolling	Assignee:	Nobody <webkit-unassigned>
Status:	NEW ---
Severity:	Normal	CC:	nmouchtaris, simon.fraser, webkit-bug-importer
Priority:	P2	Keywords:	InRadar
Version:	WebKit Nightly Build
Hardware:	Unspecified
OS:	Unspecified
See Also:	https://bugs.webkit.org/show_bug.cgi?id=251297 https://bugs.webkit.org/show_bug.cgi?id=209735

Description Sam Sneddon [:gsnedders] 2023-06-16 08:52:43 PDT

c.f. https://wpt.fyi/results/css/CSS2/stacking-context/composite-change-after-scroll-preserves-stacking-order.html?label=master&product=chrome%5Bexperimental%5D&product=firefox%5Bexperimental%5D&product=safari-171%20preview%5Bexperimental%5D&product=safari-172%20preview&product=safari%5Bstable%5D

bisect points at 259592@main as the culprit

we don't have this imported in WebKit (bug 209735), see http://wpt.live/css/CSS2/stacking-context/composite-change-after-scroll-preserves-stacking-order.html

Comment 1 Radar WebKit Bug Importer 2023-06-16 08:52:55 PDT

<rdar://problem/110902526>