<p dir="auto">On documentation page, when clicking on HEAD in sidebar, there's a 404 error.</p>
<ul class="contains-task-list">
<li class="task-list-item"><input type="checkbox" id="" disabled="" class="task-list-item-checkbox" checked=""> I have searched the <a href="https://github.com/mui-org/material-ui/issues">issues</a> of this repository and believe that this is not a duplicate.</li>
</ul>
<h2 dir="auto">Expected Behavior</h2>
<p dir="auto">Getting the HEAD Github documentation.</p>
<h2 dir="auto">Current Behavior</h2>
<p dir="auto">Get a 404 error</p>
<h2 dir="auto">Steps to Reproduce (for bugs)</h2>
<p dir="auto">Go on <a href="http://www.material-ui.com/" rel="nofollow">documentation website</a>, open sidebar menu, and try to change version. All versions are working except HEAD (which should be 0.20.0).</p>
<h2 dir="auto">Context</h2>
<p dir="auto">No need</p>
<h2 dir="auto">Your Environment</h2>
<p dir="auto">No need</p>
<ul class="contains-task-list">
<li class="task-list-item"><input type="checkbox" id="" disabled="" class="task-list-item-checkbox" checked=""> I have searched the <a href="https://github.com/callemall/material-ui/issues">issues</a> of this repository and believe that this is not a duplicate.</li>
</ul>
<p dir="auto">Thanks for the awesome library guys! I'm really pleased with it so far, other than the bug I've described below.</p>
<h2 dir="auto">Expected Behavior</h2>
<p dir="auto">When I create an <code class="notranslate">IconButton</code> with a menu that activates on mouse click, the <code class="notranslate">Menu</code> should open <strong>on top of</strong> the <code class="notranslate">IconButton</code> because the <code class="notranslate">Iconbutton</code> has been set as the anchor element.</p>
<h2 dir="auto">Current Behavior</h2>
<p dir="auto">Instead, the <code class="notranslate">Menu</code>opens in the far left corner of the page. See the screenshot below to see what I mean:<br>
<a target="_blank" rel="noopener noreferrer nofollow" href="https://user-images.githubusercontent.com/7084294/30189706-72b1d7e2-93ea-11e7-9f6f-56f839e45b51.png"><img src="https://user-images.githubusercontent.com/7084294/30189706-72b1d7e2-93ea-11e7-9f6f-56f839e45b51.png" alt="stages leadsimple" style="max-width: 100%;"></a></p>
<h2 dir="auto">Steps to Reproduce (for bugs)</h2>
<p dir="auto">I can't include the steps to reproduce since I'm copy-pasting the code which isn't working directly from the <a href="https://material-ui-1dab0.firebaseapp.com/demos/menus/" rel="nofollow">MUI docs about menus</a>. Below is all my relevant code though:</p>
<div class="highlight highlight-source-js notranslate position-relative overflow-auto" dir="auto" data-snippet-clipboard-copy-content="handleClick = event =&gt; {
  this.setState({ open: true, anchorEl: event.currentTarget });
};

handleRequestClose = () =&gt; {
  this.setState({ open: false });
};

render() {
  return (
    &lt;div&gt;
      &lt;IconButton
          aria-label=&quot;More&quot;
          aria-owns={this.state.open ? 'simple-menu' : null}
          aria-haspopup=&quot;true&quot;
          onClick={this.handleClick}
       &gt;
          &lt;Icon&gt;more_vert&lt;/Icon&gt;
       &lt;/IconButton&gt;
       &lt;Menu
          id=&quot;simple-menu&quot;
          anchorEl={this.state.anchorEl}
          open={this.state.open}
          onRequestClose={this.handleRequestClose}
       &gt;
           &lt;MenuItem onClick={this.handleRequestClose}&gt;Rename&lt;/MenuItem&gt;
           &lt;MenuItem onClick={this.handleRequestClose}&gt;Merge and Delete&lt;/MenuItem&gt;
       &lt;/Menu&gt;
     &lt;/div&gt;
  )
}"><pre class="notranslate"><span class="pl-en">handleClick</span> <span class="pl-c1">=</span> <span class="pl-s1">event</span> <span class="pl-c1">=&gt;</span> <span class="pl-kos">{</span>
  <span class="pl-smi">this</span><span class="pl-kos">.</span><span class="pl-en">setState</span><span class="pl-kos">(</span><span class="pl-kos">{</span> <span class="pl-c1">open</span>: <span class="pl-c1">true</span><span class="pl-kos">,</span> <span class="pl-c1">anchorEl</span>: <span class="pl-s1">event</span><span class="pl-kos">.</span><span class="pl-c1">currentTarget</span> <span class="pl-kos">}</span><span class="pl-kos">)</span><span class="pl-kos">;</span>
<span class="pl-kos">}</span><span class="pl-kos">;</span>

<span class="pl-en">handleRequestClose</span> <span class="pl-c1">=</span> <span class="pl-kos">(</span><span class="pl-kos">)</span> <span class="pl-c1">=&gt;</span> <span class="pl-kos">{</span>
  <span class="pl-smi">this</span><span class="pl-kos">.</span><span class="pl-en">setState</span><span class="pl-kos">(</span><span class="pl-kos">{</span> <span class="pl-c1">open</span>: <span class="pl-c1">false</span> <span class="pl-kos">}</span><span class="pl-kos">)</span><span class="pl-kos">;</span>
<span class="pl-kos">}</span><span class="pl-kos">;</span>

<span class="pl-en">render</span><span class="pl-kos">(</span><span class="pl-kos">)</span><span class="pl-kos"></span> <span class="pl-kos">{</span>
  <span class="pl-k">return</span> <span class="pl-kos">(</span>
    <span class="pl-c1">&lt;</span><span class="pl-ent">div</span><span class="pl-c1">&gt;</span>
      <span class="pl-c1">&lt;</span><span class="pl-ent">IconButton</span>
          <span class="pl-c1">aria-label</span><span class="pl-c1">=</span><span class="pl-s">"More"</span>
          <span class="pl-c1">aria-owns</span><span class="pl-c1">=</span><span class="pl-kos">{</span><span class="pl-smi">this</span><span class="pl-kos">.</span><span class="pl-c1">state</span><span class="pl-kos">.</span><span class="pl-c1">open</span> ? <span class="pl-s">'simple-menu'</span> : <span class="pl-c1">null</span><span class="pl-kos">}</span>
          <span class="pl-c1">aria-haspopup</span><span class="pl-c1">=</span><span class="pl-s">"true"</span>
          <span class="pl-c1">onClick</span><span class="pl-c1">=</span><span class="pl-kos">{</span><span class="pl-smi">this</span><span class="pl-kos">.</span><span class="pl-c1">handleClick</span><span class="pl-kos">}</span>
       <span class="pl-c1">&gt;</span>
          <span class="pl-c1">&lt;</span><span class="pl-ent">Icon</span><span class="pl-c1">&gt;</span>more_vert<span class="pl-c1">&lt;</span><span class="pl-c1">/</span><span class="pl-ent">Icon</span><span class="pl-c1">&gt;</span>
       <span class="pl-c1">&lt;</span><span class="pl-c1">/</span><span class="pl-ent">IconButton</span><span class="pl-c1">&gt;</span>
       <span class="pl-c1">&lt;</span><span class="pl-ent">Menu</span>
          <span class="pl-c1">id</span><span class="pl-c1">=</span><span class="pl-s">"simple-menu"</span>
          <span class="pl-c1">anchorEl</span><span class="pl-c1">=</span><span class="pl-kos">{</span><span class="pl-smi">this</span><span class="pl-kos">.</span><span class="pl-c1">state</span><span class="pl-kos">.</span><span class="pl-c1">anchorEl</span><span class="pl-kos">}</span>
          <span class="pl-c1">open</span><span class="pl-c1">=</span><span class="pl-kos">{</span><span class="pl-smi">this</span><span class="pl-kos">.</span><span class="pl-c1">state</span><span class="pl-kos">.</span><span class="pl-c1">open</span><span class="pl-kos">}</span>
          <span class="pl-c1">onRequestClose</span><span class="pl-c1">=</span><span class="pl-kos">{</span><span class="pl-smi">this</span><span class="pl-kos">.</span><span class="pl-c1">handleRequestClose</span><span class="pl-kos">}</span>
       <span class="pl-c1">&gt;</span>
           <span class="pl-c1">&lt;</span><span class="pl-ent">MenuItem</span> <span class="pl-c1">onClick</span><span class="pl-c1">=</span><span class="pl-kos">{</span><span class="pl-smi">this</span><span class="pl-kos">.</span><span class="pl-c1">handleRequestClose</span><span class="pl-kos">}</span><span class="pl-c1">&gt;</span>Rename<span class="pl-c1">&lt;</span><span class="pl-c1">/</span><span class="pl-ent">MenuItem</span><span class="pl-c1">&gt;</span>
           <span class="pl-c1">&lt;</span><span class="pl-ent">MenuItem</span> <span class="pl-c1">onClick</span><span class="pl-c1">=</span><span class="pl-kos">{</span><span class="pl-smi">this</span><span class="pl-kos">.</span><span class="pl-c1">handleRequestClose</span><span class="pl-kos">}</span><span class="pl-c1">&gt;</span>Merge and Delete<span class="pl-c1">&lt;</span><span class="pl-c1">/</span><span class="pl-ent">MenuItem</span><span class="pl-c1">&gt;</span>
       <span class="pl-c1">&lt;</span><span class="pl-c1">/</span><span class="pl-ent">Menu</span><span class="pl-c1">&gt;</span>
     <span class="pl-c1">&lt;</span><span class="pl-c1">/</span><span class="pl-ent">div</span><span class="pl-c1">&gt;</span>
  <span class="pl-kos">)</span>
<span class="pl-kos">}</span></pre></div>
<p dir="auto">Note that this button is nested (a few components down) inside a <code class="notranslate">Grid</code> component so that may potentially be an issue. I did test the menu outside of the <code class="notranslate">Grid</code> component however and I still encountered this problem. Please help as soon as you can. Thanks!</p>
<h2 dir="auto">My Environment</h2>
<table role="table">
<thead>
<tr>
<th>Tech</th>
<th>Version</th>
</tr>
</thead>
<tbody>
<tr>
<td>Material-UI</td>
<td>v1.0.0-beta.8</td>
</tr>
<tr>
<td>React</td>
<td>15.6.1</td>
</tr>
<tr>
<td>browser</td>
<td>Google Chrome</td>
</tr>
</tbody>
</table>