jQuery UI Tooltip bug report

This is a fiddle which displays a bug in jQuery UI tooltip on at least Chrome 55.0.2883.95 (64-bit)

HTML

<script src="https://code.jquery.com/jquery-3.1.1.js"></script>
<script src="https://code.jquery.com/ui/1.12.1/jquery-ui.js"></script>
<div id="bug-div" title="See how I flash up and down?">Move the mouse rapidly across any side of this green box</div>

CSS

div[title] {
  padding: 10px;
  border: 1px solid green; /*So it's to see where the edge is*/
}

.ui-helper-hidden-accessible { 
  display: none; /*Unimportant for this bug*/
}

JavaScript

$(function() {
	$("#bug-div").tooltip();
})