Bug 198599

Summary:	Setting scrollLeft/scrollTop to 0 during rubber-banding should not change the visible scroll offset
Product:	WebKit	Reporter:	Simon Fraser (smfr) <simon.fraser>
Component:	Scrolling	Assignee:	Nobody <webkit-unassigned>
Status:	NEW
Severity:	Normal	CC:	fred.wang, koivisto, rniwa, simon.fraser, webkit-bug-importer
Priority:	P2	Keywords:	InRadar
Version:	WebKit Nightly Build
Hardware:	Unspecified
OS:	Unspecified
See Also:	https://bugs.webkit.org/show_bug.cgi?id=198597 https://bugs.webkit.org/show_bug.cgi?id=199691

Simon Fraser (smfr)

Reported 2019-06-05 20:00:29 PDT

If content sets scrollLeft/scrollTop to 0 while the user is rubber-banding, then we shouldn't clobber the rubber-banding offset, since this triggers a visual glitch. A more general approach would be to never let the content override the visual scroll position if the user has a finger down, or we're animating a rubber-band.

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Radar WebKit Bug Importer

Comment 1 2019-06-05 20:01:51 PDT

<rdar://problem/51467288>

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