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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 - Scroll-snap point produces strange 'default' snap offset vector"
   href="https://bugs.webkit.org/show_bug.cgi?id=144710">144710</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>Scroll-snap point produces strange 'default' snap offset vector
          </td>
        </tr>

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

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

        <tr>
          <th>Version</th>
          <td>528+ (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>Layout and Rendering
          </td>
        </tr>

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

        <tr>
          <th>Reporter</th>
          <td>bfulgham&#64;webkit.org
          </td>
        </tr></table>
      <p>
        <div>
        <pre>When we have scroll-snap point markup that specifies a horizontal snap range, but not a vertical, we get a default value of &quot;{0, 15}&quot;.

Example:
  .horizontalGallery {
      width: 300px;
      height: 300px;
      overflow-y: hidden;
      overflow-x: auto;
      -webkit-overflow-scrolling: touch;
      -webkit-scroll-snap-points-x: repeat(100%);
      -webkit-scroll-snap-type: mandatory;
  }

This produces snap points as follows:
  horizontal = { 0, 300, 600, 900, 1200, 1500 }, vertical = { 0, 15 }

I would expect to see either no snap points, or snap points for the two scroll extrema (i.e., vertical = { 0, 1500 }</pre>
        </div>
      </p>
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