[Bug Report] tree control deleted invalid

[lixueninggg]

Element UI version

2.4.6

OS/Browsers version

windows 10 / chrom

Vue version

2.5.17

Reproduction Link

https://jsfiddle.net/api/post/library/pure/

Steps to reproduce

点击删除无法删除

What is Expected?

可以删除子节点

What is actually happening?

无法删除子节点

[element-bot]

Translation of this issue:

Element UI version
2.4.6

OS/Browsers version
Windows 10 / chrom

Vue version
2.5.17

Reproduction Link
https://jsfiddle.net/api/post/library/pure/

Steps to reproduce
Click delete can not delete

What is Expected?
Child nodes can be deleted.

What is actually happening?
Unable to delete child nodes

[element-bot]

Hi, your JSFiddle page is blank because it seems you forgot to click the Save button. Please save your fiddle and then edit this issue with the new link.

[ziyoung]

Duplicate of #12421