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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 - Spec change: &lt;img ismap&gt; coordinates should be from image edge, not border edge"
   href="https://bugs.webkit.org/show_bug.cgi?id=169548">169548</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>Spec change: &lt;img ismap&gt; coordinates should be from image edge, not border edge
          </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>zcorpan&#64;gmail.com
          </td>
        </tr>

        <tr>
          <th>CC</th>
          <td>cdumez&#64;apple.com
          </td>
        </tr></table>
      <p>
        <div>
        <pre>Demo: <a href="http://software.hixie.ch/utilities/js/live-dom-viewer/?saved=3800">http://software.hixie.ch/utilities/js/live-dom-viewer/?saved=3800</a>

Expect click on border in the top-left corner to get coordinates 0,0. WebKit measures from the border edge instead.

whatwg/html issue: <a href="https://github.com/whatwg/html/issues/438">https://github.com/whatwg/html/issues/438</a>
whatwg/html change: <a href="https://github.com/whatwg/html/pull/529">https://github.com/whatwg/html/pull/529</a>

web-platform-test: <a href="https://github.com/w3c/web-platform-tests/pull/5118">https://github.com/w3c/web-platform-tests/pull/5118</a>

The test passes in Chromium and Gecko; fail in WebKit and Edge.

Comment from Travis (Edge) <a href="https://github.com/w3c/html/issues/492#issuecomment-285819148">https://github.com/w3c/html/issues/492#issuecomment-285819148</a>

<span class="quote">&gt; Definitely makes sense just to align with Chrome/Firefox on this...</span ></pre>
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