Combobox not showing displayField values

I'm having an issue showing data in my combobox. It loads the data but doesn't display the displayField value for selecting. Instead I just see the correct number of lines as 2 pixel high blanks when I drop the combobox down. Any help would be appreciated.

Code:

---

<ext-comboBox fieldLabel="Org" labelWidth="50" padding="3" displayField="Name" valueField="Id">
    <listeners>
        <select handler="alert('hello world');" />
    </listeners>
    <store>
        <ext-store autoLoad="true">
            <proxy>
                <ext-ajaxProxy url="@Url.Action("GetOrgs", "Header")"/>
            </proxy>
            <fields>
                <ext-integerDataField name="Id" />
                <ext-stringDataField name="Name" />
            </fields>
        </ext-store>
    </store>
</ext-comboBox>

---

The fix was to simply change displayField from "Name" to "name".

Anyone know why this works, and why "Name" wouldn't work?

I think it's a problem of converting field names into properties of classes managed in JavaScript, which have a naming convention that forces you to have a lowercase initial.
I confirm that I have always treated the fields with the initial lowercase to avoid the problem you reported.