AmChart Legend scrolling

HTML

<script src="https://www.amcharts.com/lib/3/amcharts.js"></script>
<script src="https://www.amcharts.com/lib/3/serial.js"></script>
<script src="https://www.amcharts.com/lib/3/themes/light.js"></script>
<div id="chartdiv"></div>

CSS

#chartdiv {
	width		: 100%;
	height		: 200px;
	font-size	: 11px;
}

.amChartsLegend {
  /* max-height: 200px; */
  /* overflow-y: auto !important; */
}

JavaScript

var chartData = generatechartData();

function generatechartData() {
    var chartData = [];
    var firstDate = new Date();
    firstDate.setDate(firstDate.getDate() - 150);

    for (var i = 0; i < 10; i++) {
        // we create date objects here. In your data, you can have date strings
        // and then set format of your dates using chart.dataDateFormat property,
        // however when possible, use date objects, as this will speed up chart rendering.
        var newDate = new Date(firstDate);
        newDate.setDate(newDate.getDate() + i);

        var visits = Math.round(Math.random() * 100 - 50);

        chartData.push({
            date: newDate,
            visits: visits
        });
    }
    return chartData;
}


var chart = AmCharts.makeChart("chartdiv", {
    "type": "serial",
    "addClassNames": true,
    "dataProvider": chartData,
    "valueAxes": [{
        "id": "v1",
        "axisAlpha": 0.1
    }],
    "graphs": [{
        "valueField": "visits",
        "title": "1"
    }, {
        "valueField": "visits",
        "title": "2"
    }, {
        "valueField": "visits",
        "title": "3"
    }, {
        "valueField": "visits",
        "title": "4"
    }, {
        "valueField": "visits",
        "title": "5"
    }, {
        "valueField": "visits",
        "title": "6"
    }, {
        "valueField": "visits",
        "title": "7"
    }, {
        "valueField": "visits",
        "title": "8"
    }, {
        "valueField": "visits",
        "title": "9"
    }, {
        "valueField": "visits",
        "title": "10"
    }, {
        "valueField": "visits",
        "title": "11"
    }, {
        "valueField": "visits",
        "title": "12"
    }],
    "categoryField": "date",
    "categoryAxis": {
        "parseDates": true,
        "axisAlpha": 0,
        "minHorizontalGap": 60
    },
    "legend": {
    	"enabled": true,
      "position": "right",
      "textClickEnabled": true
    }
});

// Solution proposed by AmChart support:...