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<base href="https://bugs.webkit.org/" />
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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - Uncaught Exception: null is not an object (evaluating 'this.treeOutline.isXMLMimeType')"
href="https://bugs.webkit.org/show_bug.cgi?id=169484">169484</a>
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<tr>
<th>Summary</th>
<td>Uncaught Exception: null is not an object (evaluating 'this.treeOutline.isXMLMimeType')
</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>All
</td>
</tr>
<tr>
<th>URL</th>
<td>https://webkit.org/
</td>
</tr>
<tr>
<th>OS</th>
<td>All
</td>
</tr>
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<th>Status</th>
<td>NEW
</td>
</tr>
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<th>Severity</th>
<td>Normal
</td>
</tr>
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<th>Priority</th>
<td>P2
</td>
</tr>
<tr>
<th>Component</th>
<td>Web Inspector
</td>
</tr>
<tr>
<th>Assignee</th>
<td>webkit-unassigned@lists.webkit.org
</td>
</tr>
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<th>Reporter</th>
<td>dcrousso+webkit@gmail.com
</td>
</tr>
<tr>
<th>CC</th>
<td>inspector-bugzilla-changes@group.apple.com
</td>
</tr></table>
<p>
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<pre>-------
Inspected URL: <a href="https://webkit.org/">https://webkit.org/</a>
Loading completed: true
Frontend User Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_12_4) AppleWebKit/604.1.10+ (KHTML, like Gecko)
Dispatch Source: Protocol Command Response
Protocol Command Response:
{"result":{"nodeId":218},"id":105}
Protocol Command Request:
{"id":105,"method":"DOM.setNodeName","params":{"nodeId":131,"name":"h3"}}
Uncaught Exceptions:
- null is not an object (evaluating 'this.treeOutline.isXMLMimeType') (at DOMTreeElement.js:1322:76)
_nodeTitleInfo @ DOMTreeElement.js:1322:76
updateTitle @ DOMTreeElement.js:1162:55
_updateModifiedNodes @ DOMTreeUpdater.js:123:42
_updateModifiedNodes @ DOMTreeOutline.js:470:59
changeTagNameCallback @ DOMTreeElement.js:1096:45
? @ DOMNode.js:806:31
_dispatchResponseToCallback @ Connection.js:146:27
_dispatchResponse @ Connection.js:116:45
dispatch @ Connection.js:69:35
dispatch @ InspectorBackend.js:154:49
dispatchNextQueuedMessageFromBackend @ MessageDispatcher.js:42:34
Additional Details:
cause --> An uncaught exception was thrown while dispatching response callback for command DOM.setNodeName.
-------
* STEPS TO REPRODUCE
1. Go to <<a href="https://webkit.org">https://webkit.org</a>>
2. Open WebInspector
3. Enter "Inspect Element" mode
4. Select the element with the text "WebKit for Web Developers"
5. Change the type of that node (which should be <h2>) to a different type (such as <h3>)</pre>
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