[Webkit-unassigned] [Bug 239920] New: AX: Label of aria grid is not announced when contained within a main landmark

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=239920

            Bug ID: 239920
           Summary: AX: Label of aria grid is not announced when contained
                    within a main landmark
           Product: WebKit
           Version: Safari 15
          Hardware: iPhone / iPad
                OS: iOS 15
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Accessibility
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: govett at adobe.com
                CC: andresg_22 at apple.com,
                    webkit-bug-importer at group.apple.com

When a table with `role="grid"` is contained within a main landmark (e.g. `<main>` or `<div role="main">`), its accessibility name and description are not announced when navigating into it with VoiceOver on iOS. When the main landmark is removed, the announcement works as expected.

Reproduction steps:

1. Open https://codepen.io/devongovett/pen/zYROQpG on iOS.
2. Turn on VoiceOver, and navigate to the first column header ("Foo"). Notice that it only announces the column header, and not the `aria-label` of the table.
3. Open https://codepen.io/devongovett/pen/GRQKayy. This is the exact same code without the `<main>` wrapper.
4. Navigate to the first column header again. Notice that it announces the name of the table "Test table" in addition to the column header.

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