Staffis the dropdown as a whole getting recognized at all?
if you are trying to interact withe that object, or the options within that object, could you try using something like on screen action or call object method (click the top level tab that produces the dropdown) and then use the same operations again (on screen action or call object method) and use the ctrl+shft+a option of the "object spy" to select a separate GUI action on the drop down items after it appears (after you physically click the tab that produces the drop down)?
