[Webkit-unassigned] [Bug 195174] New: AX: WebKit not posting SelectedChildrenChangedNotification for combobox

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=195174

            Bug ID: 195174
           Summary: AX: WebKit not posting
                    SelectedChildrenChangedNotification for combobox
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: All
                OS: All
            Status: NEW
          Severity: Blocker
          Priority: P2
         Component: Accessibility
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: ericliang at apple.com
                CC: webkit-bug-importer at group.apple.com

WebKit not posting SelectedChildrenChangedNotification for combobox. Unable to use arrow keys to select items in web combo boxes.

Steps To Reproduce:

1. Turn on VoiceOver > in Safari, open https://webkit.org/blog-files/aria1.0/combobox_with_live_region_status.html
2. Type "ca" in the search field, and arrow down.

Results:

Nothing appears to happen when pressing down arrow, VoiceOver does not speak the combo box items and does not appear to select any of the available items.

Regression:

The way VO handles web combo boxes has started to regress in Sierra, according to <rdar://problem/29642584> Regression: VoiceOver reads incorrect selection in web comboboxes.

This appears to have further regressed since, as it’s now no longer possible to select combo box items using arrow keys at all.

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