Bug 203003

Summary:	REGRESSION (r240250): Pages using smoothscroll.js can't be scrolled with trackpad
Product:	WebKit	Reporter:	Simon Fraser (smfr) <simon.fraser>
Component:	Scrolling	Assignee:	Nobody <webkit-unassigned>
Status:	RESOLVED DUPLICATE
Severity:	Normal	CC:	ajuma, fred.wang, mcatanzaro, 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=189472

Description Simon Fraser (smfr) 2019-10-15 13:26:02 PDT

r240250 broke scrolling on pages using the smoothscroll.js library:
https://cigarobsession.com
http://fn57sale.com
https://chopeshift.challenger.sg

Comment 1 Simon Fraser (smfr) 2019-10-15 13:26:28 PDT

rdar://problem/52712513

Comment 2 Simon Fraser (smfr) 2019-10-15 13:26:47 PDT

Need to see if these sites are also broken in Chrome, and if not, why not.

Comment 3 Ali Juma 2019-10-15 13:57:18 PDT

(In reply to Simon Fraser (smfr) from comment #2)
> Need to see if these sites are also broken in Chrome, and if not, why not.

This is the Chromium bug for sites with smoothscroll.js being broken by the change to document.documentElement as the viewport scroller: https://bugs.chromium.org/p/chromium/issues/detail?id=501568

It was fixed by this intervention in Blink, that targets smoothscroll.js:
https://groups.google.com/a/chromium.org/forum/#!msg/blink-dev/2iOz5-fgD8Y/GO7qLkg4BwAJ

Comment 4 Michael Catanzaro 2020-03-20 13:25:43 PDT


*** This bug has been marked as a duplicate of bug 207040 ***