<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 Behaviour</h2>
<p dir="auto">Should not throw an error</p>
<h2 dir="auto">Current Behavior</h2>
<p dir="auto">Throws the following error:</p>
<p dir="auto">Menu.js:107 Uncaught TypeError: Cannot read property 'focus' of null<br>
at Menu._this.focus (Menu.js:107)<br>
at Object.Menu._this.handleEnter [as onEnter] (Menu.js:122)<br>
at Object.Popover._this.handleEnter (Popover.js:226)<br>
at Object.chainedFunction [as onEnter] (helpers.js:85)<br>
at Object.Grow._this.handleEnter [as onEnter] (Grow.js:86)<br>
at Object.CSSTransition._this.onEnter (CSSTransition.js:217)<br>
at Transition.performEnter (Transition.js:242)<br>
at Transition.updateStatus (Transition.js:215)<br>
at Transition.componentDidMount (Transition.js:157)<br>
at commitLifeCycles (react-dom.development.js:8770)</p>
<h2 dir="auto">Steps to Reproduce (for bugs)</h2>
<p dir="auto">Place a Select control within a Dialog and click on the control.</p>
<table role="table">
<thead>
<tr>
<th>Tech</th>
<th>Version</th>
</tr>
</thead>
<tbody>
<tr>
<td>Material-U I</td>
<td>v1.0.0-beta.24</td>
</tr>
<tr>
<td>React</td>
<td>v16.2.0</td>
</tr>
<tr>
<td>Cromium</td>
<td>Version 63.0.3239.84 (Official Build) Built on Ubuntu , running on Ubuntu 17.04 (64-bit)</td>
</tr>
</tbody>
</table>
<h2 dir="auto">Description</h2>
<p dir="auto">When you click on item «Phone ringtone» in list - you see broken layout of confirmation dialog.<br>
<a target="_blank" rel="noopener noreferrer nofollow" href="https://user-images.githubusercontent.com/25990573/33186688-2222177e-d094-11e7-88d5-f543a937334c.png"><img src="https://user-images.githubusercontent.com/25990573/33186688-2222177e-d094-11e7-88d5-f543a937334c.png" alt="selection_002" style="max-width: 100%;"></a></p>
<h2 dir="auto">Steps to Reproduce</h2>
<p dir="auto"><a href="https://material-ui-1dab0.firebaseapp.com/demos/dialogs/#confirmation-dialogs" rel="nofollow">https://material-ui-1dab0.firebaseapp.com/demos/dialogs/#confirmation-dialogs</a></p>
<h2 dir="auto">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.21</td>
</tr>
<tr>
<td>Browsers</td>
<td>Google Chrome 61.0.3163.100 (Official Build) (64-bit), Mozilla Firefox 57.0 (64-bit)</td>
</tr>
</tbody>
</table>