带时间轴的图显示问题

[shenghou]

One-line summary [问题简述]

带时间轴的柱状图当某个时间节点的series为空时，点击该时间节点时会显示之前选择的时间节点的值

Version & Environment [版本及环境]

• ECharts version [ECharts 版本]:3.5.8
• Browser version [浏览器类型和版本]:任何浏览器
• OS Version [操作系统类型和版本]:win7

Expected behaviour [期望结果]

当配置数据丢失或者不完整的时候应该显示为空而不是之前的缓存

ECharts option [ECharts配置项]

http://gallery.echartsjs.com/editor.html?c=xrkOcIyNlW
删除其中任意一项中的'data'

Other comments [其他信息]

[stale]

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