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    <body><span class="vcard"><a class="email" href="mailto:bsward&#64;icloud.com" title="Brian Ward &lt;bsward&#64;icloud.com&gt;"> <span class="fn">Brian Ward</span></a>
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              <a class="bz_bug_link 
          bz_status_NEW "
   title="NEW - Backdrop Filter should not be visible if element has visibility:hidden"
   href="https://bugs.webkit.org/show_bug.cgi?id=149318">bug 149318</a>
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            <th>What</th>
            <th>Removed</th>
            <th>Added</th>
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               &nbsp;
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           <td>bsward&#64;icloud.com
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            <b><a class="bz_bug_link 
          bz_status_NEW "
   title="NEW - Backdrop Filter should not be visible if element has visibility:hidden"
   href="https://bugs.webkit.org/show_bug.cgi?id=149318#c2">Comment # 2</a>
              on <a class="bz_bug_link 
          bz_status_NEW "
   title="NEW - Backdrop Filter should not be visible if element has visibility:hidden"
   href="https://bugs.webkit.org/show_bug.cgi?id=149318">bug 149318</a>
              from <span class="vcard"><a class="email" href="mailto:bsward&#64;icloud.com" title="Brian Ward &lt;bsward&#64;icloud.com&gt;"> <span class="fn">Brian Ward</span></a>
</span></b>
        <pre>Just wanted to add that if the parent element has visibility:hidden, the child that has the blur will still composit the blur onto the page, even though it is expected that all content within the parent, including the child would be hidden.</pre>
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