Sunburst with defined levels has weird behavior when drill down

[yingxu9871]

One-line summary [问题简述]

可以用 sunburst demo 重现问题： http://echarts.baidu.com/examples/editor.html?c=sunburst-book,

1. 点击"心理" 节点下钻,
   2.再点击中心节点到达上一层级“非虚构”，
2. 无中心节点返回上一层，且出现怪异黄色色块， (应该是中心节点被遮挡，露出部分黄色色块)

Version & Environment [版本及环境]

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

Expected behaviour [期望结果]

no weird behavior when drilled down and go back to the upper level.

Other comments [其他信息]

1. 点击"心理" 节点下钻后.再点击中心节点
2. 到达上一层级“非虚构”，现怪异黄色色块，且无中心节点返回上一层

[yingxu9871]

这个问题可以稳定复现， 它的严重行在于，在最后一张图的状态，由于“无中心节点”， 客户无法返回上层节点“虚构”/"非虚构"， 给人的感觉是卡死了。 其实是“”非虚构“”遮挡住了“中心节点”。

[yingxu9871]

sorry, close by mistake.

[uptycs-bhaskar]

Any progress on this? This is a blocker for us in terms of sunburst adoption in our product.

[github-actions[bot]]

This issue has been automatically marked as stale because it did not have recent activity. It will be closed in 7 days if no further activity occurs. If you wish not to mark it as stale, please leave a comment in this issue.

[github-actions[bot]]

This issue has been automatically closed because it did not have recent activity. If this remains to be a problem with the latest version of Apache ECharts, please open a new issue and link this to it. Thanks!