Panning Problem on bubble chart

HTML

<script src="http://code.highcharts.com/highcharts.js"></script>
<script src="http://code.highcharts.com/highcharts-more.js"></script>
<script src="http://code.highcharts.com/modules/exporting.js"></script>
<div id="container" style="height: 400px; min-width: 310px; max-width: 600px; margin: 0 auto"></div>

JavaScript

$(function () {
    $('#container').highcharts({

        chart: {
            type: 'bubble',
         
            panning: true,
            panKey: 'shift'
        },

        title: {
            text: 'Highcharts Bubbles'
        },
        xAxis: [{
            startOnTick: true,
            endOnTick: true
        }],

        series: [{
            data: [
                [97, 36, 79],
                [94, 74, 60],
                [68, 76, 58],
                [64, 87, 56],
                [68, 27, 73],
                [74, 99, 42],
                [7, 93, 87],
                [51, 69, 40],
                [38, 23, 33],
                [57, 86, 31]
            ]
        }, {
            data: [
                [25, 10, 87],
                [2, 75, 59],
                [11, 54, 8],
                [86, 55, 93],
                [5, 3, 58],
                [90, 63, 44],
                [91, 33, 17],
                [97, 3, 56],
                [15, 67, 48],
                [54, 25, 81]
            ]
        }, {
            data: [
                [47, 47, 21],
                [20, 12, 4],
                [6, 76, 91],
                [38, 30, 60],
                [57, 98, 64],
                [61, 17, 80],
                [83, 60, 13],
                [67, 78, 75],
                [64, 12, 10],
                [30, 77, 82]
            ]
        }]
    });
});