<p dir="auto">Describe what you were doing when the bug occurred:</p>
<ol dir="auto">
<li>Go to profile tag</li>
<li>Click to record</li>
<li>After stop recording, click on any commits.</li>
</ol>
<hr>
<h2 dir="auto">Please do not remove the text below this line</h2>
<p dir="auto">DevTools version: 4.9.0-75726fadfd</p>
<p dir="auto">Component stack: CommitFlamegraphAutoSizer@moz-extension://7ef91e4d-0a91-434a-b6fa-c2646d78406c/build/main.js:33986:50<br>
div<br>
div<br>
div<br>
SettingsModalContextController@moz-extension://7ef91e4d-0a91-434a-b6fa-c2646d78406c/build/main.js:28047:1<br>
Profiler_Profiler@moz-extension://7ef91e4d-0a91-434a-b6fa-c2646d78406c/build/main.js:35614:50<br>
ErrorBoundary_ErrorBoundary@moz-extension://7ef91e4d-0a91-434a-b6fa-c2646d78406c/build/main.js:29061:5<br>
PortaledContent@moz-extension://7ef91e4d-0a91-434a-b6fa-c2646d78406c/build/main.js:29178:27<br>
div<br>
div<br>
ProfilerContextController@moz-extension://7ef91e4d-0a91-434a-b6fa-c2646d78406c/build/main.js:32775:1<br>
TreeContextController@moz-extension://7ef91e4d-0a91-434a-b6fa-c2646d78406c/build/main.js:24163:1<br>
SettingsContextController@moz-extension://7ef91e4d-0a91-434a-b6fa-c2646d78406c/build/main.js:24652:1<br>
ModalDialogContextController@moz-extension://7ef91e4d-0a91-434a-b6fa-c2646d78406c/build/main.js:29245:1<br>
DevTools_DevTools@moz-extension://7ef91e4d-0a91-434a-b6fa-c2646d78406c/build/main.js:36048:1</p>
<blockquote>
<p dir="auto">mergeObjectsWithNoDuplicateKeys(): Tried to merge two objects with the same key: %s</p>
</blockquote>
<p dir="auto">Understandably general given that this is used to merge a couple things, but the actual use case is when <code class="notranslate">getIntialState</code> or <code class="notranslate">getDefaultValue</code> (or <code class="notranslate">getChildContext</code> but shh) is used in a mixin and the component and both return an object with the same key.</p>
<p dir="auto">We should make this error mention something about those methods so people have an idea of where to look instead of them coming to IRC and being (rightfully) confused.</p>