[Webkit-unassigned] [Bug 262170] New: AX: can not scroll with magic keyboard trackpad

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=262170

            Bug ID: 262170
           Summary: AX: can not scroll with magic keyboard trackpad
           Product: WebKit
           Version: Safari 16
          Hardware: iPhone / iPad
                OS: iOS 16
            Status: NEW
          Severity: Blocker
          Priority: P2
         Component: Scrolling
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: panyaoheng at wps.cn
                CC: simon.fraser at apple.com

Created attachment 467890

  --> https://bugs.webkit.org/attachment.cgi?id=467890&action=review

demo page

platform: iPad(7) iPadOS 16.1(20B79)
magic keyboard hardware version: 0009
magic keyboard firmware version: 0450.0523.0200

can not use magic keyboard trackpad to fast scroll an scrollable container.
step: 
1、open the test html page in safari.
2、use trackpad to click refresh button on link bar;
3、move cursor to the number list container and scroll fast on trackpad.

result: the number list cannot scroll.

weird things:
1、can not make continuous scroll on trackpad,but can sroll slow once by once.
2、after click the page by finger touch,scroll behavior back normal and can scroll fast and continuously。

if you can not reproduce, try a few more times or click to focus the input before scroll.

PS: a bluetooth mouse migth has the same scroll issue，heard from others.

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