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      <base href="https://bugs.webkit.org/" />
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    <body><table border="1" cellspacing="0" cellpadding="8">
        <tr>
          <th>Bug ID</th>
          <td><a class="bz_bug_link 
          bz_status_NEW "
   title="NEW - Shadow DOM: Toggling class in `::slotted(.class)` does not trigger style recalc"
   href="https://bugs.webkit.org/show_bug.cgi?id=160865">160865</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>Shadow DOM: Toggling class in `::slotted(.class)` does not trigger style recalc
          </td>
        </tr>

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

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

        <tr>
          <th>Version</th>
          <td>Safari Technology Preview
          </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>HTML DOM
          </td>
        </tr>

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

        <tr>
          <th>Reporter</th>
          <td>webkit&#64;keanulee.com
          </td>
        </tr>

        <tr>
          <th>CC</th>
          <td>cdumez&#64;apple.com
          </td>
        </tr></table>
      <p>
        <div>
        <pre>Similar to, but may not be the same as <a class="bz_bug_link 
          bz_status_NEW "
   title="NEW - Shadow DOM: Toggling class in `.class ::slotted(*)` does not trigger style recalc"
   href="show_bug.cgi?id=160864">https://bugs.webkit.org/show_bug.cgi?id=160864</a>

Repro: <a href="http://jsbin.com/voviqe/1/edit?html,output">http://jsbin.com/voviqe/1/edit?html,output</a>



Toggling class &quot;special&quot; does not cause a style recalc:

::slotted(.special) {
  background: green
}</pre>
        </div>
      </p>
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