Bug 254998

Summary:	UI-side compositing: Weather.com background lags when scrolling
Product:	WebKit	Reporter:	Matt Woodrow <mattwoodrow>
Component:	Layout and Rendering	Assignee:	Matt Woodrow <mattwoodrow>
Status:	RESOLVED FIXED
Severity:	Normal	CC:	bfulgham, simon.fraser, webkit-bug-importer, zalan
Priority:	P2	Keywords:	InRadar
Version:	WebKit Nightly Build
Hardware:	Unspecified
OS:	Unspecified

Description Matt Woodrow 2023-04-04 10:33:59 PDT

<rdar://104436838>

When scrolling Weather Channel weather.com — the blue background appears to have to catch up to the scrolling, no issue with UI-side disabled.

ThreadedScrollingTree::canUpdateLayersOnScrollingThread() returns false when scrolling weather.com, so we don’t do any async scrolling using the old code.

Comment 1 Matt Woodrow 2023-04-04 10:40:00 PDT

Pull request: https://github.com/WebKit/WebKit/pull/12383

Comment 2 EWS 2023-04-04 15:49:29 PDT

Committed 262596@main (c715f8457e17): <https://commits.webkit.org/262596@main>

Reviewed commits have been landed. Closing PR #12383 and removing active labels.