[Webkit-unassigned] [Bug 231760] New: AX: checkbox indeterminate IDL attribute regression

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=231760

            Bug ID: 231760
           Summary: AX: checkbox indeterminate IDL attribute regression
           Product: WebKit
           Version: Safari 15
          Hardware: All
               URL: https://scottaohara.github.io/tests/attr-indeterminate
                    /
                OS: All
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Accessibility
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: scottaohara at yahoo.com
                CC: andresg_22 at apple.com, jcraig at apple.com,
                    webkit-bug-importer at group.apple.com

There appears to have been a regression in the support for a native HTML checkbox's indeterminate IDL attribute, as recent testing has shown that it is returning the unchecked value (0) rather than the mixed value (2) when specified.

Test case: https://scottaohara.github.io/tests/attr-indeterminate/

Reviewing with the accessibility checker, the native checkboxes are returning a value of 0 when given the indeterminate IDL attribute.  

I found these previous issues which reported on this bug, and were closed as fixed (hence assuming this is a regression). I am linking to them here in hopes that they might be somehow helpful in fixing this new instance of the mixed state not being properly exposed.

https://bugs.webkit.org/show_bug.cgi?id=158876
https://bugs.webkit.org/show_bug.cgi?id=134492

Thanks

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