ant + Bizcharts 数据切换后有之前数据的虚影

Question

使用ant + Bizcharts 柱状图绑定state 数据 切换之后有 之前数据的虚影

let arr =[
      { year: "1959 年", sales: 38 },
      { year: "1960 年", sales: 38 }
]
this.setState({ chartData: arr })

render(){
    const { chartData } = this.state;
    const cols = { sales: { tickInterval: 20 } };
    <Chart height={500} data={chartData} scale={cols} forceFit>
       <Axis name="year" />
       <Axis name="sales" />
       <Tooltip crosshairs={{ type: "y" }} />
       <Geom type="interval" position="year*sales" />
    </Chart>
}