[Webkit-unassigned] [Bug 203292] New: [Shadow DOM] Accessory bar next/previous buttons do not work on inputs in shadow roots

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=203292

            Bug ID: 203292
           Summary: [Shadow DOM] Accessory bar next/previous buttons do
                    not work on inputs in shadow roots
           Product: WebKit
           Version: Safari 13
          Hardware: iPhone / iPad
                OS: iOS 13
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: DOM
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: ldebeasi at gmail.com

Inputs that are slotted in shadow roots are not accessible via the next/previous buttons in the iOS Safari Accessory Bar.

Link to CodePen reproduction: https://codepen.io/liamdebeasi/pen/bGGqMpO

Steps to reproduce:

1. Open CodePen link on an iOS device (tested on iOS 12 and iOS 13).
2. Tap "Light DOM Input 2". Notice that the next/previous buttons are active.
3. Tap "Shadow DOM Input 2". Notice that the next/previous buttons are disabled.
4. Tap "Shadow DOM Input 3". Notice that the next button is disabled, even though the next input is in the light DOM and the same form.


Expected Result:

I would expect to be able to use the next/previous buttons to jump between inputs regardless of whether or not the input is in the Shadow DOM.


Other Info:

Next/Previous buttons on inputs in the Shadow DOM behave as expected on Chrome for Android.

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