Bug 211179

Summary:

REGRESSION: Double tap dispatches one click event on iOS 13.4 when it would dispatch two on iOS 13.3

Product:

WebKit

Reporter:

Antoine Quint <graouts>

Component:

UI Events

Assignee:

Wenson Hsieh <wenson_hsieh>

Status:

RESOLVED FIXED

Severity:

Normal

CC:

bdakin, graouts, juwagn, megan_gardner, thorton, webkit-bug-importer, wenson_hsieh

Priority:

Keywords:

InRadar

Version:

WebKit Nightly Build

Hardware:

Unspecified

OS:

Unspecified

URL:

https://codepen.io/juliogcampos/pen/BzdjwY

See Also:

https://bugs.webkit.org/show_bug.cgi?id=204664

Attachments:

Description	Flags
Patch	none

Description Antoine Quint 2020-04-29 06:08:58 PDT

Filing this bug to track the discussion on React issue 17258 (https://github.com/facebook/react/issues/17258) and specifically comment https://github.com/facebook/react/issues/17258#issuecomment-620325096 which points to a CodePen (https://codepen.io/juliogcampos/pen/BzdjwY) showing an example where the behavior differs between iOS 13.3 and iOS 13.4. I tested this myself on iPhone 8.

Comment 1 Radar WebKit Bug Importer 2020-04-29 06:09:28 PDT

<rdar://problem/62594779>

Comment 2 Antoine Quint 2020-04-29 06:24:59 PDT

On iOS 13.1: two taps = one click event
On iOS 13.3: two taps = two click events
On iOS 13.4: two taps = one click event

I believe the iOS 13.3 behavior is the correct one. This sounds like bug 202006 is back :(

Comment 3 Antoine Quint 2020-04-29 07:37:33 PDT

This regressed with r253267, the fix for bug 204664.

Comment 4 Wenson Hsieh 2020-04-30 17:28:10 PDT

Created attachment 398127 [details]
Patch

Comment 5 EWS 2020-04-30 20:01:13 PDT

Committed r260979: <https://trac.webkit.org/changeset/260979>

All reviewed patches have been landed. Closing bug and clearing flags on attachment 398127 [details].

Comment 6 juwagn 2020-05-06 13:13:01 PDT

Hi, my bug on iOS 3.4.1 was marked as possible dupe of this one.
However by me it is about touchstart/touchend events, or pointerdown/pointerup, where by fast two touches sequence only one event gets fired instead sequential two.
Also it is not about click event but could be potentially handle same point.