How to enable ion-content bounce effect when scrolling?

Ionic Framework
1

I don’t know why the scrolling on the ion-content doesn’t trigger bouncing.

Code

<ion-content>
  <ion-item mode="ios" class="ion-no-padding" detail="false" lines="none" button (click)="action1()">
    <ion-label>
        {{ 'ACTION_1' | translate }}
    </ion-label>
  </ion-item>
  <ion-item mode="ios" class="ion-no-padding" detail="false" lines="none" button (click)="action2()">
    <ion-label>
        {{ 'ACTION_2' | translate }}
    </ion-label>
  </ion-item>
  <!-- Other ion-items -->
</ion-content>

ionic info

Ionic:

   Ionic CLI                     : 6.13.1
   Ionic Framework               : @ionic/angular 5.6.11
   @angular-devkit/build-angular : 12.0.0
   @angular-devkit/schematics    : 11.2.5
   @angular/cli                  : 11.2.5
   @ionic/angular-toolkit        : 3.1.1

Cordova:

   Cordova CLI       : 10.0.0
   Cordova Platforms : android 9.1.0
   Cordova Plugins   : cordova-plugin-ionic-keyboard 2.2.0, cordova-plugin-ionic-webview 5.0.0, (and 19 other plugins)