<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 - CSS Shadow don't work properly with scroll"
   href="https://bugs.webkit.org/show_bug.cgi?id=165372">165372</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>CSS Shadow don't work properly with scroll
          </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>Unspecified
          </td>
        </tr>

        <tr>
          <th>OS</th>
          <td>Windows 10
          </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>CSS
          </td>
        </tr>

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

        <tr>
          <th>Reporter</th>
          <td>support&#64;smk.fr
          </td>
        </tr></table>
      <p>
        <div>
        <pre>Created <span class=""><a href="attachment.cgi?id=296134" name="attach_296134" title="Shadows repeat with scroll">attachment 296134</a> <a href="attachment.cgi?id=296134&amp;action=edit" title="Shadows repeat with scroll">[details]</a></span>
Shadows repeat with scroll

I've just found a bug on the Windows version of Chrome, version 54 and 55.

On this page : <a href="http://www.parispeniches.fr/fr/mpl2-Nos-peniches.html">http://www.parispeniches.fr/fr/mpl2-Nos-peniches.html</a>

If scroll down the page, and then scroll back up, Chrome display several horizontal gray lines, remains of the shadow applied  to the top menu bar (.navbar-custom). If the shadow is deactivated, the site display correctly when I scroll Down and Up.

I've found this problem on the following versions of Chrome : 

Chrome  Version 54.0.2840.99 m / Windows 10 Famille 64bits
Chrome  Version 55.0.2883.75 m / Windows 10 famille 64bits
Chrome  Version Version 54.0.2840.99 m / Windows 7 Pro SP1 64Bits

I don't have this problem on MacOS or on previous versions of Chrome.

Thanks.</pre>
        </div>
      </p>
      <hr>
      <span>You are receiving this mail because:</span>
      
      <ul>
          <li>You are the assignee for the bug.</li>
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