leaon4 commented on issue #11493: 树图用setOption更新数据时，发现图有残留BUG URL: https://github.com/apache/incubator-echarts/issues/11493#issuecomment-546983262 用刚下的master分支版本试了，残留的现象还是存在的，与expandAndCollapse无关 [ { "name": "3", "children": [] }, { "name": "3", "children": [{ "name": "2", "children": [] }, { "name": "" }] }, { "name": "2", "children": [{ "name": "1", "children": [] }, { "name": "3", "children": [] }] }, { "name": "2", "children": [{ "name": "1", "children": [] }, { "name": "3", "children": [{ "name": "" }, { "name": "4", "children": [] }] }] }, ] 用这四条数据可以复现，同样可以在官网示例上复现 
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