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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - -webkit-backdrop-filter leaves artifacts on rounded borders"
href="https://bugs.webkit.org/show_bug.cgi?id=158807">158807</a>
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<th>Summary</th>
<td>-webkit-backdrop-filter leaves artifacts on rounded borders
</td>
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<th>Classification</th>
<td>Unclassified
</td>
</tr>
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<th>Product</th>
<td>WebKit
</td>
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<th>Version</th>
<td>Safari 9
</td>
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<th>Hardware</th>
<td>iOS
</td>
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<th>OS</th>
<td>iOS 9.3
</td>
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<th>Status</th>
<td>NEW
</td>
</tr>
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<th>Severity</th>
<td>Major
</td>
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<th>Priority</th>
<td>P2
</td>
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<th>Component</th>
<td>CSS
</td>
</tr>
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<th>Assignee</th>
<td>webkit-unassigned@lists.webkit.org
</td>
</tr>
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<th>Reporter</th>
<td>asa_carter@hotmail.com
</td>
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<pre>Created <span class=""><a href="attachment.cgi?id=281383" name="attach_281383" title="Preview of artifacts in iOS safari">attachment 281383</a> <a href="attachment.cgi?id=281383&action=edit" title="Preview of artifacts in iOS safari">[details]</a></span>
Preview of artifacts in iOS safari
Issue:
Using -webkit-backdrop-filter to create a background blur leaves artifacts around the edge of an element that has a border-radius.
Removing the -webkit-backdrop-filter removes the artifacts.
In addition, the blur is also used with a CSS fade animation in my example and the blur is not drawn until the animation has completed. Not sure if this is a bug?
How to reproduce:
Visit <a href="https://appifiny.co.uk/demo/">https://appifiny.co.uk/demo/</a> in Safari or Safari on iOS.
Observe artifacts around each corner.
Observe blur being visibly drawn after fade animation has completed.
OS: OS X 10.11.5
Safari: 9.1.1
iOS: 10 Beta 1</pre>
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