[Webkit-unassigned] [Bug 268273] New: iPad: value set to <select> form by JavaScript is not applied to popup UI until blur

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=268273

            Bug ID: 268273
           Summary: iPad: value set to <select> form by JavaScript is not
                    applied to popup UI until blur
           Product: WebKit
           Version: Safari 17
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Forms
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: baba at bpsinc.jp
                CC: cdumez at apple.com, wenson_hsieh at apple.com

Created attachment 469589

  --> https://bugs.webkit.org/attachment.cgi?id=469589&action=review

screenshot

Steps to reproduce:

1. Open https://jsbin.com/tawelomajo/1/edit?html,js,output by iPad (not iPhone) Safari.
2. Touch the select box. Change the value to "2" on shown popup UI.
3. Re-touch the select box.

Expected behavior:

Both of them should be "1":
- the displayed value on HTML
- the default value in popup UI shown by step 3.

Actual behavior:

The displayed value on HTML is "1", but the default value in popup UI is "2".
The latter will be fixed when the <select> loses focus by touching anywhere or calling "blur()".

Note:

All browsers other than iPad Safari works correctly.
On iPhone Safari, the <select> automatically loses focus after changing value so the issue cannot be reproduced.

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