title: Highcharts columns overlapped
body: <p>can you tell me how to avoid this overlapping issue using the Highcharts libraries?</p>
  
  <p><a href="http://jsfiddle.net/d58vwagf/1/" rel="nofollow">Here the JsFiddle</a></p>
  
  <p>You see there are 2 column overlapped, and even the tickers label are overlapped!</p>
  
  <pre><code>chart: {
              type: 'column'
          },title: {
              text: 'title'
          },plotOptions: {
              column: {
                  stacking: 'normal',
                  minPointLength: 2
              }
          },xAxis: {
              type: 'datetime',
              title: {
                  text: 'date'
              },
              tickPositions:  categoriesGrafico,
              labels:{
                  rotation: -90,
                  formatter:function(){
                  return Highcharts.dateFormat('%d/%m/%Y',this.value);
                  }
              },
              reversed: true,
              dateTimeLabelFormats: {
                  day: '%d/%m/%Y',
              }
          },yAxis: {
              title: {
                  text: 'value'
              },
              min: 0
          },
      series: seriesGrafico
  });
  </code></pre>
  
  <p>I've read a lot of posts on the web, and tried a lot of options, but without a solution.</p>
  
  <p>Thanks you so much</p>