Kendo Grid Header Blank

if a Kendo grid header is blank, the entire column is removed.

HTML

<link rel="stylesheet" href="http://cdn.kendostatic.com/2013.2.918/styles/kendo.common.min.css">
<script src="http://cdn.kendostatic.com/2013.2.918/js/kendo.all.min.js"></script>
<link rel="stylesheet" href="http://cdn.kendostatic.com/2013.2.918/styles/kendo.silver.min.css">
<script src="http://demos.kendoui.com/content/shared/js/people.js"></script>
 <table class="kendoGrid">
            <thead>
            <tr>
                <th>test</th>
                <th>ID</th>
                <th>First Name</th>
                <th>Last Name</th>
                <th>Company</th>
                <th>Title</th>
                <th>Address One</th>
                <th>City</th>
                <th>State</th>
                <th>ZIP Code</th>
                <th>Country</th>
            </tr>
            </thead>
            <tbody>
            <tr>
                <td><div class="checkbox">
                    <label>
                        <input type="checkbox"/>
                    </label>
                    </div></td>
                <td>1</td>
                <td>Aiesha</td>
                <td>Baldwin</td>
                <td>Danube Partners</td>
                <td>Marketing Senior Director</td>
                <td>910 Southwest Union Avenue</td>
                <td>Palo Alto</td>
                <td>CA</td>
                <td>94301</td>
                <td>United States</td>
            </tr>
            <tr>
                <td><div class="checkbox">
                    <label>
                        <input type="checkbox"/>
                    </label>
                    </div></td>
                <td>2	</td>
                <td>Alexandra	</td>
                <td>Wade	</td>
                <td>U. Hardwick Physics AB	</td>
                <td>Marketing Senior VP	</td>
                <td>5716 South San Salvador Street	</td>
                <td>Warrington	</td>
                <td>PA	</td>
                <td>18976	</td>
                <td>United...

JavaScript

$(".kendoGrid").kendoGrid({
            height: 300,
            sortable: true,
            scrollable: true,
            pageable: {
                refresh: true,
                pageSizes: true,
                pageSize: (2),
                buttonCount: 5
            }
        });