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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 - ScrollAnimator is not notified when mouse entered, moved or exited a RenderListBox"
   href="https://bugs.webkit.org/show_bug.cgi?id=153398">153398</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>ScrollAnimator is not notified when mouse entered, moved or exited a RenderListBox
          </td>
        </tr>

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

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

        <tr>
          <th>Version</th>
          <td>WebKit Local Build
          </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>Layout and Rendering
          </td>
        </tr>

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

        <tr>
          <th>Reporter</th>
          <td>cgarcia&#64;igalia.com
          </td>
        </tr>

        <tr>
          <th>CC</th>
          <td>bdakin&#64;apple.com, darin&#64;apple.com, simon.fraser&#64;apple.com
          </td>
        </tr></table>
      <p>
        <div>
        <pre>EvenHandler is checking whether the enclosing layer of a node is registered as scrollable area of its frame view. That doesn't work for list boxes, because they are the scrollable area themselves. Also when entering a list box the node under mouse it not usually the list box itself, but any of its children, a HTMLOptionElement or a HTMLOptGroupElement. Instead of comparing layers, we should find the enclosing scrollable area of the target elements and compare them to decide whether the mouse has entered, left or moved a scrollable area.</pre>
        </div>
      </p>
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          <li>You are the assignee for the bug.</li>
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