[Webkit-unassigned] [Bug 205158] Double tap to zoom doesn't work after upgrading to iOS 13

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=205158

--- Comment #4 from Rui Chen <ruich at microsoft.com> ---
(In reply to Rui Chen from comment #3)
> Sorry for the unclear description.
> Double-tap-to-zoom on http://www.kappabashi.or.jp/en/ does work well on
> Safari.
> 
> UPDATED REPRO STEPS:
> 1. Load above static web page I wrote in Safari
> 2. Double tap the text to zoom-in
> 3. double-tap-zoom-out doesn't work now. But if remove the `click` event
> listener, it will work well.
> 
> I think there are some conflicts between `click` event listener and
> double-tap-to-zoom. --
> 
> 
> HOW WE FOUND THIS:
> In our app, we inject following codes into WKWebView to listen the click
> events.
> After that, double-tap-to-zoom is broken on most of web pages.
> 
> http://www.kappabashi.or.jp/en/ is a sample which can't zoom in the text
> after the inject.

I've confirmed this is good on iOS13-

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