When options collapsible:true Getter active returns inital active index or null

When you create a accordion with the option collapsible:true, using the option active to get the index returns an incorrect value.

getter should return the active index, however it returns the

index intally set using the active:index option

var active = $('.selector').accordion('option', 'active');

This also effects the object UI in the following function, again returning the inital active object rather than the curretly selected object:

$('#accordion').bind('accordionchange', function(event, ui) {

ui.newHeader jQuery object, activated header

}

Here is a URL to an example http:jsbin.com/icotu

The alert that occurs when the page is loaded should have the selected index, it says "null" however, matching the inital activated object.

Attached is another example, almost exactly the same as the above URL.