[Webkit-unassigned] [Bug 210716] pointermove event sometimes has incorrect pointerType of 'mouse' on touch interactions

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=210716

--- Comment #5 from ae at seven.systems ---
(In reply to Antoine Quint from comment #3)
> Can you provide a testcase that shows the problem? Being able to reproduce
> would help diagnosing the issue. Additionally, did this reproduce this with
> an iOS 13 version prior to iOS 13.4 or is this new behavior in iOS 13.4?

Unfortunately I can't tell if this behavior is new, because I only had to rely on the pointermove event since the new mouse support was introduced in iOS 13.4. (see my previous reply to Tim Horton).

What I can say is that it is quite rare... maybe 1 in 30 or 50 events has an incorrect pointerType (but it still is a crucial problem for our use case, again see other reply). It *might* occur more often when the swipes occur near the screen edges, but I'm not sure. Maybe it has to do with the global handling of the system gestures that can be invoked from there?

I could try to construct a test case, but could take me a few days.

Thanks for the quick attention to this issue!

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