Several questions here on SO reference this open jQuery UI feature request for the ability to dynamically add/remove panels from the Accordion widget. The ticket itself is marked (closed feature: fixed) and from what I can tell from the unit tests and a pull from their Git repository it appears to be implemented in the latest release.
However if I try to add a div like they did in the unit test above:
var element = $("#accordion");
$("#accordion").append("<h3>3</h3><div>3</div>");
$("#accordion").accordion("refresh");
I can't get it to work.
However this method works:
$("#accordion").append("<h3>sec</h3<div>test</div>").accordion("destroy").accordion();
But I don't want to "destroy" the accordion, I just want to append (or prepend) an element and refresh it.
Looking at the div I added in Chrome's inspector shows that the element I added doesn't have the same CSS styling added as the rest of the accordion: