Handsontable add row/sort bug

HTML

<script src="http://handsontable.com/dist/jquery.handsontable.full.js"></script>
<link rel="stylesheet" href="http://handsontable.com/dist/jquery.handsontable.full.css">
<link rel="stylesheet" href="http://handsontable.com/demo/css/samples.css">
<h2>Handsontable add row/sort bug</h2>

<div id="exampleGrid" class="dataTable"></div>
<button id="addRow">Add row</button>

CSS

body {
    background-color: white;
    margin: 20px;
}
h2 {
    margin: 20px 0;
}

JavaScript

var myData = [{
    a: false,
    b: 2,
    c: 3
}, {
    a: false,
    b: 10,
    c: 11
}, {
    a: true,
    b: 11,
    c: -4
}];

$("#exampleGrid").handsontable({
    data: myData,
    minSpareRows: 0,
    rowHeaders: true,
    colHeaders: ["A", "B", "C"],
    columns: [{
        data: "a",
        type: "checkbox"
    }, {
        data: "b",
        type: "text"
    }, {
        data: "c",
        type: "text"
    }, ],
    columnSorting: true,
});

  //var hot = $("#exampleGr_id").handsontable('getInstance');

$("#addRow").click(function () {
    myData.push({
        a: true,
        b: 100,
        c: 1000
    });
});