DataTables with FixedColumns

HTML

<script src="https://code.jquery.com/jquery-1.12.3.min.js"></script>
<script src="https://datatables.net/release-datatables/media/js/jquery.dataTables.js"></script>
<script src="https://datatables.net/release-datatables/media/js/dataTables.bootstrap4.js"></script>
<script src="https://datatables.net/release-datatables/extensions/FixedColumns/js/dataTables.fixedColumns.js"></script>
<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/4.0.0-alpha.2/css/bootstrap.css">
<link rel="stylesheet" href="https://datatables.net/release-datatables/media/css/dataTables.bootstrap4.css">
<link rel="stylesheet" href="https://datatables.net/release-datatables/extensions/FixedColumns/css/fixedColumns.bootstrap4.css">
<!-- https://datatables.net/release-datatables/extensions/FixedColumns/examples/styling/bootstrap4.html -->

<table id="example" class="table table-striped table-bordered nowrap" cellspacing="0" width="100%">
    <thead>
        <tr>
		  <th colspan="2"></th>
          <th colspan="2">
            Name
          </th>
          <th colspan="2">
            Working as
          </th>
          <th colspan="5">
            Details
          </th>
        </tr>
        <tr>
			<th colspan="1"></th>
			<th colspan="1">Sticky thing</th>
            <th>First name</th>
            <th>Last name</th>
            <th>Position</th>
            <th>Office</th>
            <th>Age</th>
            <th>Start date</th>
            <th>Salary</th>
            <th>Extn.</th>
            <th>E-mail</th>
        </tr>
    </thead>
    <tbody>
        <tr>
			<td>1</td>
			<td>foo</td>
            <td>Tiger</td>
            <td>Nixon</td>
            <td>System Architect</td>
            <td>Edinburgh</td>
            <td>61</td>
            <td>2011/04/25</td>
            <td>$320,800</td>
            <td>5421</td>
            <td>t.nixon@datatables.net</td>
        </tr>
        <tr>
			<td>2</td>
			<td>foo</td>
            <td>Garrett</td>
        ...

JavaScript

$(document).ready(function() {
    var table = $('#example').DataTable( {
        paging:         false,
        "dom": "Zt",
        "searching": false,
        "info": false,
        "autoWidth": false,
        "colResize": {
          "exclude": [
            0
          ],
          "tableWidthFixed": false
        },
        "deferRender": true,
        "language": {
          "emptyTable": "Für diese Tabelle sind keine Daten verfügbar",
          "zeroRecords": "",
          "loadingRecords": "",
          "aria": {
            "sortAscending": "Spalte aufsteigend sortieren",
            "sortDescending": "Spalte absteigend sortieren"
          }
        },
        "order": [],
        "scroller": {
          "loadingIndicator": true
        },
        "scrollY": 300,
        "scrollX": true,
        "fixedColumns": {
          "leftColumns": 2
        },
    } );
} );