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        <tr>
          <th>Bug ID</th>
          <td><a class="bz_bug_link 
          bz_status_NEW "
   title="NEW - backdrop-filter ignores parent border-radius, even with overflow: hidden"
   href="https://bugs.webkit.org/show_bug.cgi?id=168418">168418</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>backdrop-filter ignores parent border-radius, even with overflow: hidden
          </td>
        </tr>

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

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

        <tr>
          <th>Version</th>
          <td>WebKit Nightly Build
          </td>
        </tr>

        <tr>
          <th>Hardware</th>
          <td>Unspecified
          </td>
        </tr>

        <tr>
          <th>OS</th>
          <td>Unspecified
          </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>briannvalente&#64;gmail.com
          </td>
        </tr></table>
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        <pre>Created <span class=""><a href="attachment.cgi?id=301731" name="attach_301731" title="Screenshots inspecting the elements">attachment 301731</a> <a href="attachment.cgi?id=301731&amp;action=edit" title="Screenshots inspecting the elements">[details]</a></span>
Screenshots inspecting the elements

In this case, I'm trying to display an image with an &quot;EDIT&quot; span on it with width:100%. Both elements (img, span) are inside of a container with border-radius. If I set a semi-transparent background to the span (rgba(255, 255, 255, .5)) the span stays inside of the container and works well. But if I add a blur or saturation effect with -webkit-backdrop-filter the element ignores the border-radius of the parent, goes out of it.

A live version can be found here: <a href="https://brianvalente.tk/webkit-bug.html">https://brianvalente.tk/webkit-bug.html</a></pre>
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