yujinpan

懒加载时 `default-expanded-keys` 需要匹配当前勾选节点的所有父级节点，否则无法找到所在层级。 [Playground](https://element-plus.run/#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) 中将 `:default-expanded-keys=[1,3]` 即可正常显示。

Problem to be optimized: - [ ] Provides an alternative name configuration for lazy loading - [ ] Display the name even if it is not rendered when not lazy...

There must be!

3.0 版本已发布，支持 vue3。

Try to set props `render-after-expand=false`

> I don't think it would be appropriate to use :render-after-expand="false" to avoid this problem? Indeed, this problem needs to be solved fundamentally.

感谢反馈，请尽量提供一些实例代码。

需要支持多大的数据，是要解决卡顿问题吗

感谢反馈，已加入计划中。

感谢反馈，尽快排查问题。