【报Bug】ECharts点击响应出错（点击无响应和响应错位）

示例代码：

<script>  
import * as echarts from 'echarts'  

export default {  
  data() {  
    return {  
      option: {  
        title: {  
          text: 'Traffic Sources',  
          left: 'center'  
        },  
        tooltip: {  
          trigger: 'item',  
          formatter: '{a} <br/>{b} : {c} ({d}%)'  
        },  
        legend: {  
          orient: 'vertical',  
          left: 'left',  
          data: ['Direct', 'Email', 'Ad Networks', 'Video Ads', 'Search Engines']  
        },  
        series: [  
          {  
            name: 'Traffic Sources',  
            type: 'pie',  
            radius: '55%',  
            center: ['50%', '60%'],  
            data: [  
              { value: 335, name: 'Direct' },  
              { value: 310, name: 'Email' },  
              { value: 234, name: 'Ad Networks' },  
              { value: 135, name: 'Video Ads' },  
              { value: 1548, name: 'Search Engines' }  
            ],  
            emphasis: {  
              itemStyle: {  
                shadowBlur: 10,  
                shadowOffsetX: 0,  
                shadowColor: 'rgba(0, 0, 0, 0.5)'  
              }  
            }  
          }  
        ]  
      }  
    }  
  },  
  onReady() {  
    const chart = echarts.init(this.$refs.echarts)  
    chart.setOption(this.option)  
  }  
}  
</script>  

<template>  
  <div ref="echarts" class="echarts" autoresize></div>  
</template>  

<style scoped>  
.echarts {  
  width: 100vw;  
  height: 400px;  
  display: flex;  
}  
</style>

操作步骤：

点击图表任何位置均响应为 Direct 显隐

预期结果：

点击饼图展示 tooltip，点击 legend 开关 label

实际结果：

点击图表任何位置均响应为 Direct 显隐