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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - @supports parse error with the filter property when no parameter is specified"
href="https://bugs.webkit.org/show_bug.cgi?id=145874">145874</a>
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<th>Summary</th>
<td>@supports parse error with the filter property when no parameter is specified
</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>528+ (Nightly build)
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<th>Hardware</th>
<td>Unspecified
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<th>OS</th>
<td>Unspecified
</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
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<th>Component</th>
<td>CSS
</td>
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<th>Assignee</th>
<td>webkit-unassigned@lists.webkit.org
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<th>Reporter</th>
<td>phiw2@l-c-n.com
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<pre>Created <span class=""><a href="attachment.cgi?id=254708" name="attach_254708" title="test case">attachment 254708</a> <a href="attachment.cgi?id=254708&action=edit" title="test case">[details]</a></span>
test case
@supports (filter:blur()) or (-webkit-filter: blur()) { /* do something */ } is parsed as valid by Webkit but not by Firefox (the rules inside the `@supports` block are applied by Webkit nightly builds). Note the missing parameter for the blur value.
Chromium based browsers appear to suffer from the same issue (tested with Opera 30).
Note:
1. Webkit handles this correctly for `@supports (transform:scale()) {}` and ignores everything inside the @supports block.
2. -webkit-backdrop-filter: blur() is also affected</pre>
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