Ember reverseObjects not working right

I'm using Ember's reverseObjects() method, but it's not working as expected.

I have a text input and a submit button. Without the reverseObjects method all items are added to the list sequentially, as expected. When type in new items it gets weird. For example, typing the numbers 1 through 9 where each number is an entry should show a list like this:

9 8 7 6 5 4 3 2 1

What I get when I use reverseObjects is:

9 7 5 3 1 2 4 6 8

What's going on here and how do I fix it?

here's my js:

Thanks!

var userList = [];

App.AddItemsController = Ember.ObjectController.extend({
    actions: {
        // item entry form submit
        inputSubmit: function(){
            var value = this.get('itemName');   // gets text input value
            userList.pushObject({
                name: value
            }).reverseObjects();
            document.querySelector('.js-input-add-item').value = ''; // clear input on submit
            return userList;
        }
    }
});