TreeSelect nzCheckable and nzCheckStrictly causes parent node to be removed when only child node is clicked

[atom-morgan]

Reproduction link

https://stackblitz.com/edit/angular-ogz5wh?file=src/app/app.component.ts

Steps to reproduce

1. Click nodes parent 1-0, leaf 1-0-0, and leaf 1-0-1.
2. Click to remove node leaf 1-0-0.

Only node leaf 1-0-0 is removed from the list.

Update the template code to what's below which adds nzCheckable.

<nz-tree-select
  style="width: 250px"
  nzPlaceHolder="Please select"
  [(ngModel)]="value"
  [nzMaxTagCount]="3"
  [nzMaxTagPlaceholder]="omittedPlaceHolder"
  [nzNodes]="nodes"
  [nzDefaultExpandAll]="true"
  [nzAllowClear]="false"
  [nzMultiple]="true"
  [nzCheckStrictly]="true"
  [nzCheckable]="true"
  (ngModelChange)="onChange($event)"
  >
</nz-tree-select>

1. Click nodes parent 1-0, leaf 1-0-0, and leaf 1-0-1.
2. Click to remove node leaf 1-0-0.

Nodes parent 1-0 and leaf 1-0-0 are both removed from the list.

What is expected?

Only leaf 1-0-0 should be removed from the list

What is actually happening?

Nodes parent 1-0 and leaf 1-0-0 are both removed from the list.

Environment	Info
ng-zorro-antd	9.0.0
Browser	Chrome 80.0.3987.163

---

If I understand the documentation correctly, nzCheckable should simply add checkboxes to the TreeSelect and nzCheckStrictly should remove any associations between parent nodes and child nodes but using these two together doesn't seem to work correctly.

[vthinkxie]

Hi @atom-morgan
I have tried to replace the template as you described, but everything works fine as the expected.
https://stackblitz.com/edit/angular-ogz5wh-qipucw?file=src/app/app.component.ts

[atom-morgan]

Hi @vthinkxie, I just tried this again and I'm still getting the same results. I've included a gif of the behavior that I'm seeing.