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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 - Sporadic crash in HashTableAddResult following CSSValuePool::createFontFamilyValue"
   href="https://bugs.webkit.org/show_bug.cgi?id=158297">158297</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>Sporadic crash in HashTableAddResult following CSSValuePool::createFontFamilyValue
          </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>iOS
          </td>
        </tr>

        <tr>
          <th>OS</th>
          <td>iOS 9.3
          </td>
        </tr>

        <tr>
          <th>Status</th>
          <td>NEW
          </td>
        </tr>

        <tr>
          <th>Severity</th>
          <td>Major
          </td>
        </tr>

        <tr>
          <th>Priority</th>
          <td>P2
          </td>
        </tr>

        <tr>
          <th>Component</th>
          <td>CSS
          </td>
        </tr>

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

        <tr>
          <th>Reporter</th>
          <td>erezg&#64;microsoft.com
          </td>
        </tr></table>
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        <pre>Created <span class=""><a href="attachment.cgi?id=280318" name="attach_280318" title="Stack Trace of crash">attachment 280318</a> <a href="attachment.cgi?id=280318&amp;action=edit" title="Stack Trace of crash">[details]</a></span>
Stack Trace of crash

This also happens in Safari Technology Preview on Mac OSX, and WKWebView in iOS versions since iOS 9.0.
Happens when integrating Bing Maps in a website.

Stack Trace is attached.
Could be some race condition as this is sporadic.
Thanks!</pre>
        </div>
      </p>
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