Bug 250652

Summary:	A fixed header inside overflow scroll with a transformed ancestor stutters on scrolling (affects Libby app)
Product:	WebKit	Reporter:	Simon Fraser (smfr) <simon.fraser>
Component:	Scrolling	Assignee:	Simon Fraser (smfr) <simon.fraser>
Status:	RESOLVED FIXED
Severity:	Normal	CC:	simon.fraser, webkit-bug-importer
Priority:	P2	Keywords:	InRadar
Version:	WebKit Local Build
Hardware:	Unspecified
OS:	Unspecified
See Also:	https://bugs.webkit.org/show_bug.cgi?id=253503

Description Simon Fraser (smfr) 2023-01-15 11:07:47 PST

The fixed header in the Libby app search results flickers on scrolling. It's position:fixed inside overflow:scroll, with a transformed ancestor.

Comment 1 Simon Fraser (smfr) 2023-01-15 11:08:02 PST

<rdar://104095908>

Comment 2 Simon Fraser (smfr) 2023-01-15 11:13:11 PST

Pull request: https://github.com/WebKit/WebKit/pull/8675

Comment 3 EWS 2023-01-21 15:27:51 PST

Committed 259175@main (2f33fa54c405): <https://commits.webkit.org/259175@main>

Reviewed commits have been landed. Closing PR #8675 and removing active labels.