radar: bug

HTML

<script src="http://www.amcharts.com/lib/3/amcharts.js" type="text/javascript"></script>
<script src="http://www.amcharts.com/lib/3/radar.js" type="text/javascript"></script>
<div id="chartdiv" style="width: 100%; height: 395px;"></div>

CSS

body
{
    font-size:12px;
    color:#000000;
    background-color:#ffffff;
    font-family:verdana,helvetica,arial,sans-serif;
}

.amChartsButtonSelected
{
   background-color:#CC0000;
   border-style:solid;
   border-color:#CC0000;
   border-width:1px;
   color:#FFFFFF;
  -moz-border-radius: 5px;
  border-radius: 5px;
  margin: 1px;   
    padding:3px;
}

.amChartsButton
{
   background-color:#EEEEEE;
   border-style:solid;
   border-color:#CCCCCC;
   border-width:1px;
   color:#000000;
  -moz-border-radius: 5px;
  border-radius: 5px;
  margin: 1px;  
    padding:3px;
}

.amChartsCompareList
{
   border-style:solid;
   border-color:#CCCCCC;
   border-width:1px;
}

JavaScript

AmCharts.ready(function() {
var radar17865 = new AmCharts.AmRadarChart();
radar17865.balloon.fillAlpha = 0.5;
radar17865.balloon.fillColor = "#00FFFF";
radar17865.dataProvider =[
{CodeMois:"1" , NomMois:"Janvier" , Ratio:69 , Nombre:55 },
{CodeMois:"2" , NomMois:"Février" , Ratio:75 , Nombre:49 },
{CodeMois:"3" , NomMois:"Mars" , Ratio:88 , Nombre:51 },
{CodeMois:"4" , NomMois:"Avril" , Ratio:88 , Nombre:65 },
{CodeMois:"5" , NomMois:"Mai" , Ratio:90 , Nombre:60 },
{CodeMois:"6" , NomMois:"Juin" , Ratio:85 , Nombre:45 },
{CodeMois:"7" , NomMois:"Juillet" , Ratio:99 , Nombre:10 },
{CodeMois:"8" , NomMois:"Aout" , Ratio:100 , Nombre:5 },
{CodeMois:"9" , NomMois:"Septembre" , Ratio:58 , Nombre:98 },
{CodeMois:"10" , NomMois:"Octobre" , Ratio:89 , Nombre:60 },
{CodeMois:"11" , NomMois:"Novembre" , Ratio:90 , Nombre:64 },
{CodeMois:"12" , NomMois:"Décembre" , Ratio:87 , Nombre:70 }];
radar17865.colors = ["#FF6600","#FCD202","#B0DE09","#0D8ECF","#2A0CD0","#CD0D74","#CC0000","#00CC00","#0000CC","#DDDDDD","#999999","#333333","#990000"];
var radar17865_ValueAxis_0 = new AmCharts.ValueAxis();
radar17865_ValueAxis_0.axisAlpha = 0.15;
radar17865_ValueAxis_0.minimum = 20;
radar17865_ValueAxis_0.stackType = "regular";
radar17865.addValueAxis(radar17865_ValueAxis_0)
var radar17865_AmGraph_0 = new AmCharts.AmGraph();
radar17865_AmGraph_0.bullet = "square";
radar17865_AmGraph_0.color = "#D00000";
radar17865_AmGraph_0.fillAlphas = 1;
radar17865_AmGraph_0.fillColors = ["#52E3A9","#E3AE52"];
radar17865_AmGraph_0.title = "Ratio";
radar17865_AmGraph_0.valueField = 'Ratio';
radar17865.addGraph(radar17865_AmGraph_0);
var radar17865_AmGraph_1 = new AmCharts.AmGraph();
radar17865_AmGraph_1.bullet = "bubble";
radar17865_AmGraph_1.color = "#00D000";
radar17865_AmGraph_1.fillAlphas = 1;
radar17865_AmGraph_1.fillColors = ["#ebe9f9","#d8d0ef","#cec7ec","#c1bfea"];
radar17865_AmGraph_1.title = "Nombre";
radar17865_AmGraph_1.valueField =...