<p dir="auto">I don't know who's making the bug, so reporting here. I'll move to correct repo if someone helps me debug it.<br>
<strong>Do you want to request a <em>feature</em> or report a <em>bug</em>?</strong><br>
Bug<br>
<strong>What is the current behavior?</strong><br>
Please watch below screencast:<br>
<a href="https://drive.google.com/file/d/1KMP44qsZ4y3MwrLLDdnOzPZ8z5mMElFP/view" rel="nofollow">https://drive.google.com/file/d/1KMP44qsZ4y3MwrLLDdnOzPZ8z5mMElFP/view</a></p>
<ol dir="auto">
<li>Goto <a href="https://react-devtools-tutorial.now.sh/editing-props-and-state" rel="nofollow">https://react-devtools-tutorial.now.sh/editing-props-and-state</a></li>
<li>Change the last ListItem prop to isComplete from <code class="notranslate">false</code> to <code class="notranslate">true</code>.</li>
<li>Click the checkbox in the view to change the state again from <code class="notranslate">true</code> to <code class="notranslate">false</code>.<br>
<strong>What is the expected behavior?</strong><br>
It should just change the state of that ListItem. Instead, it's adding 3 more in the list with duplicate keys.</li>
</ol>
<p dir="auto"><strong>Which versions of React, and which browser / OS are affected by this issue? Did this work in previous versions of React?</strong></p>
<p dir="auto">Latest React.<br>
Mac, Chrome Version 75.0.3770.142 (Official Build) (64-bit)</p>
<p dir="auto">Where does proptypes doc live? It's confusing it's still on React object but inaccessible from the website through search or table of contents. Let's either reinstantiate it or move it fully to the standalone repo. Also it's confusing we're deprecating createClass but it still lives in the docs ("React without ES6") whereas we're just "moving" PropTypes but they're gone from the docs.</p>