TreeSelect Illogical selection of search results

[cnguu]

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

Version

1.7.3

Environment

vue2.5.17, windows10, chrome92.0.4515.107

Reproduction link

Steps to reproduce

1. Open the link and see the TreeSelectBug2
2. Enter 5268 to search
3. Check the first check box
4. You will see that the child nodes not searched for is selected

What is expected?

Select only the searched child nodes

What is actually happening?

The child nodes that are not in the search results are selected

[zkwolf]

看上去逻辑并没有什么不对的，因为父子关联的缘故children被选中应该算正常的

[cnguu]

看上去逻辑并没有什么不对的，因为父子关联的缘故children被选中应该算正常的

正常的使用逻辑不应该是只对搜索结果选中吗？
不管是否是搜索的结果，都对children选中的话，感觉像个bug

[zkwolf]

因为默认父子关联，你选中了父节点子节点也会被选中

[cnguu]

因为默认父子关联，你选中了父节点子节点也会被选中

搜索后，父子关联应该被更新，不应该包含不在的搜索结果

[tangjinzhou]

看下 treeCheckStrictly 这个属性，父子节点脱离关系

[cnguu]

看下 treeCheckStrictly 这个属性，父子节点脱离关系

父子脱离关系就无法全选了，我需要的是对搜索结果的全选

[liangxp]

这个属性treeCheckStrictly=true 会导致v-model无法正常关联节点

[github-actions]

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