Peculiar Jquery behavior when using .effects()
<p>I was trying to use .effect( "bounce", "slow" ) on a div but three more divs appeared instead. 
The problem is quite hard to explain in text, so I have included a JSFiddle link at the bottom.</p>

<p>I wasn't sure if it was my code so I copied the entire source directly from the documentation to JSFiddle and got the same result.</p>

<p><a href="http://jsfiddle.net/ryBjh/" rel="nofollow">http://jsfiddle.net/ryBjh/</a></p>

<p>Here's the code:</p>

<pre><code>&lt;!doctype html&gt;
&lt;html lang="en"&gt;
&lt;head&gt;
    &lt;meta charset="utf-8"&gt;
    &lt;title&gt;effect demo&lt;/title&gt;
    &lt;link rel="stylesheet" href="http://code.jquery.com/ui/1.9.2/themes/base/jquery-ui.css"&gt;
    &lt;style&gt;
    div {
        width: 100px;
        height: 100px;
        background: #ccc;
        border: 1px solid #000;
    }
    &lt;/style&gt;
    &lt;script src="http://code.jquery.com/jquery-1.8.3.js"&gt;&lt;/script&gt;
    &lt;script src="http://code.jquery.com/ui/1.9.2/jquery-ui.js"&gt;&lt;/script&gt;
&lt;/head&gt;
&lt;body&gt;

&lt;p&gt;Click anywhere to apply the effect.&lt;/p&gt;
&lt;div&gt;&lt;/div&gt;

&lt;script&gt;
$( document ).click(function() {
    $( "div" ).effect( "bounce", "slow" );
});
&lt;/script&gt;

&lt;/body&gt;
&lt;/html&gt;
</code></pre>

<p>Tested on Chrome
Script works normally on ie8 and firefox... so is this a chrome bug?</p>
