[Webkit-unassigned] [Bug 250792] New: Undo/redo triggered when preventDefault() has been called on touch* events

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=250792

            Bug ID: 250792
           Summary: Undo/redo triggered when preventDefault() has been
                    called on touch* events
           Product: WebKit
           Version: Safari 16
          Hardware: iPhone / iPad
                OS: iOS 16
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: UI Events
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: yuweih at google.com

Repro step:

1. Go to the demo page: https://jsfiddle.net/s0cft7v1/1/show
2. Type something on the input box
2. Do three-finger swipes and observe

Expected:

Nothing happens.

Actual:

The undo/redo tooltip shows up. The text is changing in the input box

---

The demo page (edit mode: https://jsfiddle.net/s0cft7v1/1) simply has an input box and a big div below. The div has these event handlers:

```
el.addEventListener('touchstart', (ev) => {ev.preventDefault();});
el.addEventListener('touchmove', (ev) => {ev.preventDefault();});
el.addEventListener('touchend', (ev) => {ev.preventDefault();});
```

Given that this does prevent the browser from zooming the page when the user performs two-finger zoom gestures, I would also expect that the browser wouldn't handle three-finger gestures.

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