loadingwyn opened a new issue #16291:
URL: https://github.com/apache/echarts/issues/16291
### Version
5.2.2
### Link to Minimal Reproduction
_No response_
### Steps to Reproduce
```js
{
series: [{
name: ' xxx',
sampling: 'lttb',
type: 'line',
emphasis: false,
showSymbol: false,
symbol: 'circle',
symbolSize: 10
};
}]
```
### Current Behavior
鼠标hover的series会被渲染在最上层，即使emphasis被设置为false,
这导致当图表中有多条折线且为密集数据时，用户一旦移动鼠标，多条折现会来回被渲染在最上层，视觉效果为快速闪动，体验较差
### Expected Behavior
emphasis关闭后，能够取消所有默认效果
### Environment
```markdown
- OS:
- Browser:
- Framework:
```
### Any additional comments?
_No response_
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