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          <th>Bug ID</th>

          <td><a class="bz_bug_link 

          bz_status_NEW "

   title="NEW - AX:"

   href="https://bugs.webkit.org/show_bug.cgi?id=166702">166702</a>

          </td>

        </tr>

        <tr>

          <th>Summary</th>

          <td>AX:

          </td>

        </tr>

        <tr>

          <th>Classification</th>

          <td>Unclassified

          </td>

        </tr>

        <tr>

          <th>Product</th>

          <td>WebKit

          </td>

        </tr>

        <tr>

          <th>Version</th>

          <td>WebKit Nightly Build

          </td>

        </tr>

        <tr>

          <th>Hardware</th>

          <td>All

          </td>

        </tr>

        <tr>

          <th>OS</th>

          <td>All

          </td>

        </tr>

        <tr>

          <th>Status</th>

          <td>NEW

          </td>

        </tr>

        <tr>

          <th>Severity</th>

          <td>Normal

          </td>

        </tr>

        <tr>

          <th>Priority</th>

          <td>P2

          </td>

        </tr>

        <tr>

          <th>Component</th>

          <td>Accessibility

          </td>

        </tr>

        <tr>

          <th>Assignee</th>

          <td>webkit-unassigned&#64;lists.webkit.org

          </td>

        </tr>

        <tr>

          <th>Reporter</th>

          <td>jonathan&#64;tumult.com

          </td>

        </tr>

        <tr>

          <th>CC</th>

          <td>webkit-bug-importer&#64;group.apple.com

          </td>

        </tr></table>

      <p>

        <div>

        <pre>iOS will not navigate via aria-flowto if the item it is targeting has a missing, invalid, or non-flowable role.

Take the following HTML document:

&lt;div id=&quot;item1&quot; role=&quot;img&quot;    aria-flowto=&quot;item2&quot;&gt;  Item 1 (role=img, flowto=item2)&lt;/div&gt;

&lt;div id=&quot;item2&quot; role=&quot;button&quot; aria-flowto=&quot;item3&quot;&gt;  Item 2 (role=button, flowto=item3)&lt;/div&gt;

&lt;div id=&quot;item3&quot; role=&quot;asdf&quot;   aria-flowto=&quot;item4&quot;&gt;  Item 3 (role=asdf, flowto=item4)&lt;/div&gt;

&lt;div id=&quot;item4&quot; role=&quot;radio&quot;  aria-flowto=&quot;item1&quot;&gt;  Item 4 (role=radio, flowto=item1)&lt;/div&gt;

The flow will not move to item3 in this case, since the role is &quot;asdf&quot;.  It beeps and will stop in navigation entirely; there's no way to reach 3 or 4 (at least via standard swiping).  If there is no role it is the same. Also roles like &quot;group&quot; have the same effect.

I am reproducing on iPad with iOS 10 via:

1. Enabling VoiceOver

2. Swiping to the right</pre>

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      </p>

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          <li>You are the assignee for the bug.</li>

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