Bug 250361

Summary:	[UI-side compositing] Sequence of wheel events doesn't trigger DOM handlers
Product:	WebKit	Reporter:	Simon Fraser (smfr) <simon.fraser>
Component:	Scrolling	Assignee:	Nobody <webkit-unassigned>
Status:	RESOLVED DUPLICATE
Severity:	Normal	CC:	simon.fraser, webkit-bug-importer
Priority:	P2	Keywords:	InRadar
Version:	WebKit Local Build
Hardware:	Unspecified
OS:	Unspecified

Description Simon Fraser (smfr) 2023-01-09 22:30:22 PST

With UI-side compositing enabled, fast/scrolling/mac/momentum-animator-end-event-stops.html reveals a bug where only the first wheel event is dispatched to JS because `WebPage::wheelEvent()` never calls the `send(Messages::WebPageProxy::DidReceiveEvent()` so subsequent events are held up via WebWheelEventCoalescer::shouldDispatchEvent() having a non-empty m_eventsBeingProcessed.

Comment 1 Radar WebKit Bug Importer 2023-01-09 22:30:43 PST

<rdar://problem/104061538>

Comment 2 Simon Fraser (smfr) 2023-01-23 15:30:49 PST

Fixed via bug 250752.

*** This bug has been marked as a duplicate of bug 250752 ***