JavaScript Intellisense not showing jQueryUI Widgets?

When, in a MVC4 project, I add a .js-file to my Scripts folder, R# seems to be showing IntelliSense like it's supposed to. For example, if I type

/// <reference path="jquery-1.8.2.intellisense.js" />
/// <reference path="jquery-ui-1.8.24.js" />
 

$(document).ready(function() {
   $(".autocomplete").au

I do get a lot of options to select from. I want to use jQueryUI's autocomplete feature. But it is missing from the list.

With R# turned off I get:

With R# enabled I get:

So, I'm missing autocomplete in R#'s Intellisense, but I'm also getting a lot of options I think don't belong there. autoFocus is an option for the autocomplete widget of jQueryUI.

Also, when I do type in autocomplete myself, R# is unable to navigate to its definition (it says "Declarations of implicit property 'autocomplete' were not found").

I'm using VS2012 with R# 7.1.3000.2554