<html>
    <head>
      <base href="https://bugs.webkit.org/" />
    </head>
    <body><table border="1" cellspacing="0" cellpadding="8">
        <tr>
          <th>Bug ID</th>
          <td><a class="bz_bug_link 
          bz_status_NEW "
   title="NEW - faulty rendering on scrolling [eg. python.org]"
   href="https://bugs.webkit.org/show_bug.cgi?id=154879">154879</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>faulty rendering on scrolling [eg. python.org]
          </td>
        </tr>

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

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

        <tr>
          <th>Version</th>
          <td>Other
          </td>
        </tr>

        <tr>
          <th>Hardware</th>
          <td>PC
          </td>
        </tr>

        <tr>
          <th>OS</th>
          <td>Linux
          </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>WebKit Gtk
          </td>
        </tr>

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

        <tr>
          <th>Reporter</th>
          <td>fosero&#64;gmail.com
          </td>
        </tr>

        <tr>
          <th>CC</th>
          <td>bugs-noreply&#64;webkitgtk.org
          </td>
        </tr></table>
      <p>
        <div>
        <pre>python.org renders fine at first load, but scrolling makes it unusable: lots of white areas and bits and pieces of the original page. It is visible on the main page, but easier to reproduce on eg. the PEP pages (<a href="https://www.python.org/dev/peps/">https://www.python.org/dev/peps/</a>).

This behaviour is confirmed with webkit-gtk-2.11.9{0,1} on X11. These pages used to leak loads in older versions.

It's probably not just python.org, but that's the only example I encountered so far.</pre>
        </div>
      </p>
      <hr>
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      <ul>
          <li>You are the assignee for the bug.</li>
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