RESOLVED FIXED211179
REGRESSION: Double tap dispatches one click event on iOS 13.4 when it would dispatch two on iOS 13.3 
https://bugs.webkit.org/show_bug.cgi?id=211179
Summary REGRESSION: Double tap dispatches one click event on iOS 13.4 when it would d...
Antoine Quint
Reported 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.
Attachments
Patch (11.80 KB, patch)
2020-04-30 17:28 PDT, Wenson Hsieh 		no flags
DetailsFormatted DiffDiff
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Radar WebKit Bug Importer
Comment 1 2020-04-29 06:09:28 PDT
<rdar://problem/62594779>
Antoine Quint
Comment 2 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 :(
Antoine Quint
Comment 3 2020-04-29 07:37:33 PDT
This regressed with r253267, the fix for bug 204664.
Wenson Hsieh
Comment 4 2020-04-30 17:28:10 PDT
Created attachment 398127 [details] Patch
EWS
Comment 5 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].
juwagn
Comment 6 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.
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