Bug 211049

Summary:	trackpad inertial scrolling a nested, scroll-snap container also scrolls the ancestor scroll container
Product:	WebKit	Reporter:	alex
Component:	Scrolling	Assignee:	Nobody <webkit-unassigned>
Status:	RESOLVED DUPLICATE
Severity:	Normal	CC:	simon.fraser, webkit-bug-importer
Priority:	P2	Keywords:	InRadar
Version:	Safari Technology Preview
Hardware:	Unspecified
OS:	Unspecified

Description alex 2020-04-26 11:36:57 PDT

How to reproduce:

1. Open https://jsbin.com/kixoqexixo/edit?html,output
2. Scroll the area with the green rulers using your trackpad and with some velocity

What happens:
As soon as you stop scrolling and momentum scrolling kicks in the red rulers also start to scroll.

What is expected:
As long as the scroll was initialized by the inner nested scroll-snap container the ancestor should not be scrolled.

Comment 1 Radar WebKit Bug Importer 2020-04-27 19:59:35 PDT

<rdar://problem/62480952>

Comment 2 Simon Fraser (smfr) 2020-04-28 09:00:57 PDT

I think I fixed this in r259805. Can you test STP 105?

Comment 3 alex 2020-04-28 22:48:11 PDT

Yes it is fixed in STP 105. I tested it in STP 104... Sorry for the noise and thank you very much.

Comment 4 Simon Fraser (smfr) 2020-04-29 07:46:13 PDT


*** This bug has been marked as a duplicate of bug 210095 ***