RESOLVED FIXED250438
tiled-drawing/scrolling/scroll-snap tests fail with UI-side compositing 
https://bugs.webkit.org/show_bug.cgi?id=250438
Summary tiled-drawing/scrolling/scroll-snap tests fail with UI-side compositing
Simon Fraser (smfr)
Reported 2023-01-10 21:55:07 PST
These tests do things like: eventSender.keyDown("rightArrow"); expectTrue(document.scrollingElement.scrollLeft == (window.innerWidth * scale), "arrow key div scrolled to second div."); With UI-side compositing, arrow handling hits AsyncScrollingCoordinator::requestScrollPositionUpdate(), which bounces to the UI process, and then IPCs back to the web process via AsyncScrollingCoordinator::reconcileScrollingState() which updates the ScrollableArea's scroll position, which is then read by `scrollLeft`. So the tests need to wait for a presentation update after dispatching the key.
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Radar WebKit Bug Importer
Comment 1 2023-01-10 21:55:43 PST
<rdar://problem/104108634>
Simon Fraser (smfr)
Comment 2 2023-01-10 21:56:52 PST
Pull request: https://github.com/WebKit/WebKit/pull/8510
EWS
Comment 3 2023-01-11 09:53:27 PST
Committed 258790@main (0a58ac14fcc1): <https://commits.webkit.org/258790@main> Reviewed commits have been landed. Closing PR #8510 and removing active labels.
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