Enter a duplicate tag, both tags get removed

[pgarzina]

Reproduction link

https://codesandbox.io/s/7bciw

Steps to reproduce

Enter c12, the previous tag c12 gets removed and the new one does not get added

What is expected?

Keep the previous c12 tag, without adding the new c12 tag

What is actually happening?

Both tags get removed

Environment	Info
ng-zorro-antd	11.0.2
Browser	Chrome Version 88.0.4324.150

---

I saw that this bug got reported in 2018 (https://github.com/NG-ZORRO/ng-zorro-antd/issues/929) and says its fixed, so not sure if this is now the standard behavior. If it really is the wanted behavior it would be great to have an ability to control the behavior, eg.

<nz-select
    [removeDuplicates]="false"
   ....
</nz-select>

[zyon1]

Same problem here, can we get any update on how to handle this, or when do you plan to fix this.

[mmartinovich]

Experiencing the same thing as well. It is a bad UX. Please advice how to handle this. Thank you

[chumra]

The thing is you don't even have to put duplicate value. If you enter c12 and then enter just c it will also get removed.

[pgarzina]

has this by any chance been fixed?

[pgarzina]

seems that this part got fixed

If you enter c12 and then enter just c it will also get removed.

but we are still left with the behavior that duplicate values are removed by default, which does not seem to be an expected behavior for the users.