title: Echarts bar overlap
body: <p>I'm struggle to find why the bar overlap. Look at the picture below</p>
  
  <p><a href="https://i.stack.imgur.com/CcygW.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/CcygW.png" alt=""></a>
  Here is my option.</p>
  
  <pre><code>this.options = {
      backgroundColor: echarts.bg,
      color: [colors.warningLight, colors.infoLight, colors.dangerLight, colors.successLight, colors.primaryLight],
      title: {
        text: 'WaitStats',
        textStyle: {
          color: echarts.textColor,
        },
      },
      toolbox: {
        left: 'right',
        feature: {
            saveAsImage: {
              title: 'Save As picture',
            },
            magicType: {
              type: ['line', 'bar'],
              title: { 
                line: 'Line Chart',
                bar: 'Bar Chart'
              },
            }
        }
      },
      tooltip: {},
      legend: {
        left: '15%',
        width: '72%',
        textStyle: {
          color: echarts.textColor,
        },
      },
      grid: {
        left: '1%',
        right: '1%',
        bottom: '7%',
        top: '12%',
        containLabel: true,
      },
      xAxis: [
        {
          type: 'category',
          boundaryGap: false,
          data: this.seriesX,
          axisTick: {
            alignWithLabel: true,
          },
          axisLine: {
            lineStyle: {
              color: echarts.axisLineColor,
            },
          },
          axisLabel: {
            //rotate: 90,
            textStyle: {
              color: echarts.textColor,
            },
          },
        },
      ],
      yAxis: [
        {
          type: 'value',
          min: 0,
          max: 100,
          interval: 10,
          axisLabel: {
              formatter: '{value} %',
              textStyle: {
                color: echarts.textColor,
              },
          },
          axisLine: {
            lineStyle: {
              color: echarts.axisLineColor,
            },
          },
          splitLine: {
            lineStyle: {
              color: echarts.splitLineColor,
            },
          },
        },
      ],
      dataZoom: [
        {
          show: true,
          start: 0,
          end: 100
        },
        {
            type: 'inside',
            start: 0,
            end: 100
        },
      ],
      series: this.seriesData
    };
  </code></pre>
  
  <p>Thanks for your help !
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