tree树形控件 使用懒加载更新数据

[airzhanglin]

• I have searched the issues of this repository and believe that this is not a duplicate.

Version

1.4.0-beta.0

Environment

chrome 76.0.3809.132 vue:2.6.10

Reproduction link

http://middle.test.yaodianjia.cn/merchant/#/institution/list

Steps to reproduce

使用懒加载的方式，展开第一级后 在输入框输入文字重新获取数据赋值给data 这个时候展开按钮不见了，不可以展开数据然后获取数据

What is expected?

需要求更新数据方式的方法

What is actually happening?

没有

---

重现链接 填了也打不开，是后台地址。

[github-actions]

This issue is stale because it has been open 60 days with no activity. Remove stale label or comment or this will be closed in 7 days

[github-actions]

This issue has been automatically locked since there has not been any recent activity after it was closed. Please open a new issue for related bugs.