Backbone Marionette emptyView template being added to the DOM twice
===

I'm use a Marionette Composite View with the emptyView property to render a simple template when the collection for the composite view has no models. emptyView works fine on multiple places in my app, but for some reason there's one view where the emptyView is rendering twice on the page. 

My initial thought was the the view was re-rendering and not removing itself when the collection was synced. A console.log in the initialize function reveals that initialize is only being called once though.

    class AllLists extends Backbone.Marionette.CompositeView
      itemView: List
      emptyView: NoLists
      template: AllListsTemplate
      className: 'lists'
        
      initialize: (options) ->
        @collection.fetch()
        console.log 'lists ', @collection, @model

    class NoLists extends Backbone.Marionette.ItemView
      template: NoListsTemplate
      tagName: 'li'
      className: 'no-lists'

As you can see, there's nothing too crazy going on here. The empty list template is just a simple h4 tag with some text in it.

Any ideas as to what might be causing this?