":empty" psuedo-class not working

I am trying to use the :empty psuedo-class to remove empty lists. Instead, it does not select empty &lt;li&gt; tags or any other tags I try:

```Java
var doc = Jsoup.parse(" <p>test</p>\n" +
	" <ul>\n" +
	"   <li>\n" +
	"   </li>\n" +
	" </ul>\n" +
	" <ul>\n" +
	"   <li>\n" +
	"   </li>\n" +
	" </ul>\n" +
	" <p>test</p>");
var lis = doc.select("li:empty");
lis.remove();
```