<p dir="auto">Some times ripple effect not working for focus</p>

<h2 dir="auto">Steps to Reproduce (for bugs)</h2>

<ol dir="auto">
<li>Open <a href="https://material-ui.com/demos/buttons/" rel="nofollow">https://material-ui.com/demos/buttons/</a></li>
<li>Play with keyboard focus</li>
</ol>
<p dir="auto">or</p>
<ol dir="auto">
<li>Watch video <a href="https://youtu.be/rV0zxotpekk" rel="nofollow">https://youtu.be/rV0zxotpekk</a></li>
</ol>
<h2 dir="auto">Your Environment</h2>

<table role="table">
<thead>
<tr>
<th>Tech</th>
<th>Version</th>
</tr>
</thead>
<tbody>
<tr>
<td>Material-UI</td>
<td>1.0.0-beta.18</td>
</tr>
<tr>
<td>React</td>
<td>15.5.4</td>
</tr>
<tr>
<td>browser</td>
<td>Chromium  62 and Chrome 62</td>
</tr>
</tbody>
</table>
<p dir="auto">On the <a href="https://material-ui.com/getting-started/installation/" rel="nofollow">Getting Started - Installation</a> page, Cloudflare appears to be reading <code class="notranslate">npm install --save material-ui@next</code> as an email address and replacing it with <code class="notranslate">npm install --save material-[email protected]</code></p>
<p dir="auto">The <code class="notranslate">[email protected]</code> links to <a href="https://material-ui.com/cdn-cgi/l/email-protection" rel="nofollow">https://material-ui.com/cdn-cgi/l/email-protection</a>.</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">The first line should appear as <code class="notranslate">npm install --save material-ui@next</code></p>
<h2 dir="auto">Current Behavior</h2>

<p dir="auto">The first line appears as <code class="notranslate">npm install --save material-[email protected]</code></p>
<h2 dir="auto">Steps to Reproduce (for bugs)</h2>

<ol dir="auto">
<li>Go to <a href="https://material-ui.com/getting-started/installation/#npm" rel="nofollow">https://material-ui.com/getting-started/installation/#npm</a> and view the code snippet.</li>
</ol>
<h2 dir="auto">Context</h2>

<p dir="auto">I've been using this great library for several months now, and needed a quick reference on the syntax to grab the beta version for a new project.</p>