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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - Dynamic changes to backdrop filter inside opacity behave incorrectly"
href="https://bugs.webkit.org/show_bug.cgi?id=164606">164606</a>
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<th>Summary</th>
<td>Dynamic changes to backdrop filter inside opacity behave incorrectly
</td>
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<th>Classification</th>
<td>Unclassified
</td>
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<th>Product</th>
<td>WebKit
</td>
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<th>Version</th>
<td>Safari Technology Preview
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<th>Hardware</th>
<td>All
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<th>OS</th>
<td>macOS 10.12
</td>
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<th>Status</th>
<td>NEW
</td>
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<th>Severity</th>
<td>Normal
</td>
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<th>Priority</th>
<td>P2
</td>
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<th>Component</th>
<td>Layout and Rendering
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<th>Assignee</th>
<td>webkit-unassigned@lists.webkit.org
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</tr>
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<th>Reporter</th>
<td>mstange@themasta.com
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<th>CC</th>
<td>simon.fraser@apple.com
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<pre>Created <span class=""><a href="attachment.cgi?id=294396" name="attach_294396" title="testcase">attachment 294396</a> <a href="attachment.cgi?id=294396&action=edit" title="testcase">[details]</a></span>
testcase
Steps to reproduce:
1. Open the attached testcase.
2. Click the button twice.
Expected results:
The initial state of the page should appear the same as the state after clicking the button twice.
Actual results:
The second click on the button turns the element with the backdrop filter white. On page load it was gray.
I don't actually know what the correct behavior here is, but it should at least be consistent.</pre>
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