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        <tr>
          <th>Bug ID</th>
          <td><a class="bz_bug_link 
          bz_status_NEW "
   title="NEW - REGRESSION: media/track LayoutTests are flaky failures"
   href="https://bugs.webkit.org/show_bug.cgi?id=165432">165432</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>REGRESSION: media/track LayoutTests are flaky failures
          </td>
        </tr>

        <tr>
          <th>Classification</th>
          <td>Unclassified
          </td>
        </tr>

        <tr>
          <th>Product</th>
          <td>WebKit
          </td>
        </tr>

        <tr>
          <th>Version</th>
          <td>Other
          </td>
        </tr>

        <tr>
          <th>Hardware</th>
          <td>Unspecified
          </td>
        </tr>

        <tr>
          <th>OS</th>
          <td>Unspecified
          </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>Media Elements
          </td>
        </tr>

        <tr>
          <th>Assignee</th>
          <td>webkit-unassigned&#64;lists.webkit.org
          </td>
        </tr>

        <tr>
          <th>Reporter</th>
          <td>ryanhaddad&#64;apple.com
          </td>
        </tr></table>
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        <pre>media/track LayoutTests are flaky failures

See the failures in these two examples:
<a href="https://build.webkit.org/results/Apple%20El%20Capitan%20Debug%20WK1%20(Tests)/r209351%20(10119)/results.html">https://build.webkit.org/results/Apple%20El%20Capitan%20Debug%20WK1%20(Tests)/r209351%20(10119)/results.html</a>
<a href="https://build.webkit.org/results/Apple%20Sierra%20Release%20WK1%20(Tests)/r209359%20(1986)/results.html">https://build.webkit.org/results/Apple%20Sierra%20Release%20WK1%20(Tests)/r209359%20(1986)/results.html</a>

This console message appears in the diff for many of the tests:

--- /Volumes/Data/slave/elcapitan-debug-tests-wk1/build/layout-test-results/media/track/audio-track-expected.txt
+++ /Volumes/Data/slave/elcapitan-debug-tests-wk1/build/layout-test-results/media/track/audio-track-actual.txt
&#64;&#64; -1,3 +1,4 &#64;&#64;
+CONSOLE MESSAGE: line 2390: TypeError: undefined is not an object (evaluating 'this.controlsBar.visible')

 In-band audio tracks.</pre>
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