jquery-ui accordion height bug

HTML

<link href="http://code.jquery.com/ui/jquery-ui-git.css" rel="stylesheet">
<script src="http://code.jquery.com/jquery-git.js"></script>
<script src="http://code.jquery.com/ui/jquery-ui-git.js"></script>

<div style="float: left; width: 300px">
	<div id="accordion">
		<h3>Click Me</h3>
		<div>
			All of this accordion should be showing when it is opened, but the last two lines are hidden.
		</div>
	</div>
</div>

JavaScript

$("#accordion").accordion({ active: false, collapsible: true });