angular - why mat-select not working inside the modal ? onclick it shows options behind the Modal

Question

i Used the ngx-bootstrap Modal. But i faced problem when i used the mat-select inside of it . The mat-select Options display behind the Modal . i already these solutions here solution and also this one

here is my code

<ng-template style="border: 0px ;z-index: 100" #editTemplate>
  <mat-form-field>
                <mat-select multiple placeholder="Multiple Cities" [(ngModel)]="currentCity" name="Paris" ariaLabel="cities[0]">
                  <mat-option *ngFor="let city of cities" [value]="city.value">
                    {{ city.viewValue }}
                  </mat-option>
                </mat-select>
              </mat-form-field>
<ng-template>

Answer 1

It's because of conflicting z-indexes.

Quick fix

Modify the template css/scss where the modal and mat-select are placed

  .cdk-global-overlay-wrapper, .cdk-overlay-container {
     z-index: 99999 !important;
  }