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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 - Page cannot be scrolled"
   href="https://bugs.webkit.org/show_bug.cgi?id=163271">163271</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>Page cannot be scrolled
          </td>
        </tr>

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

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

        <tr>
          <th>Version</th>
          <td>Safari 9
          </td>
        </tr>

        <tr>
          <th>Hardware</th>
          <td>iPhone / iPad
          </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>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>brainworm17&#64;gmail.com
          </td>
        </tr></table>
      <p>
        <div>
        <pre>Created <span class=""><a href="attachment.cgi?id=291240" name="attach_291240" title="CSS and HTML example">attachment 291240</a> <a href="attachment.cgi?id=291240&amp;action=edit" title="CSS and HTML example">[details]</a></span>
CSS and HTML example

The page is not scrolled with some parameters though there is place to scroll.
Behaviour reproduced on a mock page with only 3 elements: body (with position fixed), left menu wrapper (with position fixed) and left menu (with position absolute). 
<a href="https://jsbin.com/zeruhiwuwe/">https://jsbin.com/zeruhiwuwe/</a>

Steps 
1) open <a href="https://jsbin.com/zeruhiwuwe/">https://jsbin.com/zeruhiwuwe/</a>
2) open out put section
3) try to scroll item list

AR: List is not scrolled
ER: List should be scrolled.

*Devices*
iPad Pro / iOS 9.3.5 / Safari
iPad Pro / iOS 10.0.1 / Safari</pre>
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          <li>You are the assignee for the bug.</li>
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