258741 2023-06-30 10:33:33 -0700 REGRESSION (263995@main): preventDefault on wheel events can still result in page scrolling (fast/scrolling/mac/event-region-prevent-default-with-sublayer.html is a consistent failure) 2023-07-05 14:25:05 -0700 1 1 1 Unclassified WebKit Scrolling WebKit Local Build Unspecified Unspecified RESOLVED FIXED InRadar P2 Normal --- 1 simon.fraser simon.fraser simon.fraser webkit-bug-importer oldest_to_newest 1964523 0 simon.fraser 2023-06-30 10:33:33 -0700 After 263995@main, if the page calls preventDefault() on the first wheel event, we'd still think the page was just unresponsive, and convert the synchronous wheel event sequent into an async one. This resulted in scrolling jiggles on pages with embedded maps that wanted to consume the wheel events for scrolling. 1964524 1 simon.fraser 2023-06-30 10:33:46 -0700 <rdar://111420041> 1964532 2 simon.fraser 2023-06-30 10:43:33 -0700 Pull request: https://github.com/WebKit/WebKit/pull/15458 1965207 3 ews-feeder 2023-07-05 14:25:03 -0700 Committed 265781@main (bdb0943f3930): <https://commits.webkit.org/265781@main> Reviewed commits have been landed. Closing PR #15458 and removing active labels.