tooltip的问题

[yuwenyaxing]

• I have searched the issues of this repository and believe that this is not a duplicate.

Reproduction link

https://github.com/yuwenyaxing/VueG2

Steps to reproduce

// 不同的指标设置不同的颜色，切换指标后，tooltip还存在上一个指标的颜色
let color = 'red'
if (part === '0') {
color = '#00FFFF'
} else if (part === '1') {
color = '#FF7F50'
} else if (part === '2') {
color = '#7B68EE'
} else if (part === '3') {
color = '#FFD700'
}
this.CityGDPChart.interval().position('year*value').color('type', color)

两条线或多条线时toolip文字靠左对齐，出现错位现象
// 设置了position: 'left'，没有生效
chart.tooltip({
position: 'left',
showCrosshairs: true,
shared: true
})

Environment	Info
g2	4.1.7
System	-
Browser	-

[hustcc]

@yuwenyaxing 方便给一个 live demo，我用来直接调试做 bugfix 吗？