取消选择最后一个项目时，多个更改事件未触发[英]multiple change event not firing when last item is deselected

I am registering a change event on a multiselect with jQuery to display the selected values in a span element below the multiselect. The change event fires fine when selecting and deselecting elements in the list, except if I deselect the last selected element.I am registering a change event on a multiselec