[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 #11 from Rui Chen <ruich at microsoft.com> ---
(In reply to Antoine Quint from comment #9)
> iOS 12.4 (16G77): double-tap-to-zoom has no effect
> iOS 13.0 (17A577): double-tap-to-zoom has no effect
> iOS 13.1.3 (17A878): double-tap-to-zoom has no effect
> iOS 13.2.3 (17B111): double-tap-to-zoom works to zoom in but not to zoom out
> 
> Based on the testcase, I would argue there is a progression in behavior over
> iOS 12.4, wouldn't you say? But this could be improved to also allow double
> tapping to zoom out.
> 
> Does this match your expectations Rui?

As my attached video shown, double-tap-to-zoom works to both zoom in and zoom out on  iPhone7 simulator with iOS12.4(16G73).

And there are only two effects I met:
1. Double-tap-to-zoom works to both zoom in and zoom out
2. Double-tap-to-zoom works to zoom in but not to zoom out

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