ionChange not being called for V7 ion-datetime with custom buttons

Ionic Framework Ionic Angular
1

Hi, I am working with @ionic/angular 7.0.4, and I have found that, at least with my setup, that ionChange is not being called when ion buttons added.

<ion-datetime
    #datetime
    presentation="date-time"
    locale="es-Ar"
    hourCycle="h23"
    [preferWheel]="true"
    [value]="ISOStringDate"
    [dayValues]="dayValues"
    [hourValues]="hourValues"
    [monthValues]="monthValues"
    [minuteValues]="minuteValues"
    (ionChange)="onChangeDate($event)"
  >
    <ion-buttons slot="buttons">
      <ion-button color="danger" (click)="onCancelSchedule(datetime)">
        Cancelar reserva
      </ion-button>
      <ion-button
        color="primary"
        [disabled]="!scheduledAt"
        (click)="onConfirmSchedule(datetime)"
      >
        Confirmar
      </ion-button>
    </ion-buttons>
  </ion-datetime>

If ion-buttons are removed, ionChange event starts working.

2

Adding buttons requires that the confirm method is called before ionChange is emitted: ion-datetime: Ionic API Input for Datetime Format Picker