Bug 220457

Summary:

touch-action:pan-y on body not respected during momentum scrolling

Product:

WebKit

Reporter:

Dan <dan>

Component:

Scrolling

Assignee:

Nobody <webkit-unassigned>

Status:

NEW

Severity:

Normal

CC:

webkit-bug-importer

Priority:

Keywords:

InRadar

Version:

Safari 14

Hardware:

iPhone / iPad

OS:

iOS 14

Attachments:

Description	Flags
touch-action: pan-y on body element	none
touch-action: pan-y on div element	none
video reproducing issue	none

Dan

Reported 2021-01-08 00:54:45 PST

Created attachment 417251 [details] touch-action: pan-y on body element This is similar to (and possible duplicate of) https://bugs.webkit.org/show_bug.cgi?id=198708, but I have not been able to reproduce that particular issue. When the `body` element has `touch-action: pan-y`, the user is able to pinch-zoom during momentum scrolling. See attached case _body-touch-action.html_ and _body-touch-action.mp4_. The issue does NOT reproduce on an element other than `body` (see attached case _element-touch-action.html_).

Attachments
touch-action: pan-y on body element (11.50 KB, text/html) 2021-01-08 00:54 PST, Dan	no flags	Details
touch-action: pan-y on div element (11.55 KB, text/html) 2021-01-08 00:55 PST, Dan	no flags	Details
video reproducing issue (25.47 MB, video/mp4) 2021-01-08 00:56 PST, Dan	no flags	Details
View All Add attachment proposed patch, testcase, etc.

Dan

Comment 1 2021-01-08 00:55:24 PST

Created attachment 417252 [details] touch-action: pan-y on div element

Dan

Comment 2 2021-01-08 00:56:59 PST

Created attachment 417253 [details] video reproducing issue

Radar WebKit Bug Importer

Comment 3 2021-01-15 00:55:33 PST

<rdar://problem/73238136>

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