TreeSelect add nzShowSearch list error

[su4g]

Reproduction link

https://ng-zorro-antd-ivy-yagpuk.stackblitz.io

Steps to reproduce

first: click input to show node list and focus input;
second: input some keywords then the node list show ampty;
third: click input again,list will be closed and input is blur;
end: click to show list ,The list is empty and the input cont has no content;unless input a exist-node or click clean that the list can be normal;

What is expected?

Click again to normal or keep the keywords in the input cont

What is actually happening?

The list is empty and the input box has no content

Environment	Info
ng-zorro-antd	9.3.0
Browser	Chrome