Bug 283499 – Role=document not treated as web content by VoiceOver

• Component: Accessibility
• Status: NEW

When using `role="application"` in the browser it is expected that using `role="document"` inside that will mean the content is treated as web content. 

> If the web application encompassed by the application role contains parts that should be treated like normal web content, a role of document or article should be used to contain such content.

https://developer.mozilla.org/en-US/docs/Web/Accessibility/ARIA/Roles/application_role


I believe this isn't happening. When looking at the below code sample with an element that contains only ` `, inside a region, inside a document, inside an application. Then it breaks VoiceOver navigation and will exit the region.



```
<div role="application">
  <div role="document">
    <div aria-label="Testing region in application" role="region" >
      <h1>This text is read out</h1>
      <p>&nbsp;</p>
      <p>This text is ignored</p>
    </div>          
  </div>
</div>
```

This issue was found when looking at an email inside the Outlook webmail client. I've also tested this using role="article" instead of region and it has the same issue.

[Radar WebKit Bug Importer]

<rdar://problem/140351781>