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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 - SafariDriver fails to addCookie"
   href="https://bugs.webkit.org/show_bug.cgi?id=165951">165951</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>SafariDriver fails to addCookie
          </td>
        </tr>

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

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

        <tr>
          <th>Version</th>
          <td>Safari 10
          </td>
        </tr>

        <tr>
          <th>Hardware</th>
          <td>Macintosh
          </td>
        </tr>

        <tr>
          <th>OS</th>
          <td>macOS 10.12
          </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>New Bugs
          </td>
        </tr>

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

        <tr>
          <th>Reporter</th>
          <td>slawekradz&#64;gmail.com
          </td>
        </tr></table>
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        <pre>All getDriver().manage() Cookie-related methods don't seem to work with up-to-date Safari on Mac OS Sierra

Setup + Exception

org.openqa.selenium.WebDriverException: An unknown server-side error occurred while processing the command. (WARNING: The server did not provide any stacktrace information)
Command duration or timeout: 10 milliseconds
Build info: version: '3.0.1', revision: '1969d75', time: '2016-10-18 09:49:13 -0700'
System info: host: 'MP18570.local', ip: '10.244.250.124', os.name: 'Mac OS X', os.arch: 'x86_64', os.version: '10.12.1', java.version: '1.8.0_112'
Driver info: org.openqa.selenium.safari.SafariDriver
Capabilities [{applicationCacheEnabled=true, rotatable=false, databaseEnabled=true, handlesAlerts=true, version=12602.2.14.0.5, cleanSession=true, platform=MAC, nativeEvents=true, locationContextEnabled=false, webStorageEnabled=true, browserName=safari, javascriptEnabled=true, cssSelectorsEnabled=true}]

Steps to reproduce:
1. Open some random site
2. Add cookie using getDriver().manage().addCookie(new Cookie.Builder(&quot;RANDOM&quot;, &quot;set by selenium&quot;).build());

Test fails with Exception presented above</pre>
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