Ion-datetime only trigger ionChange for once when it is expected to change more then once

I have a ion-datetime set up in my angular project like below.

html -

<ion-datetime clearInput presentation="date" preferWheel="false" max="2100" 
formControlName="example" minuteValues="0,10,20,30,40,50" slot="content" 
 [multiple]="true"  (ionChange)="dateTimeUpdated($event)">

typescript -


Supposedly, every time I change the value in the year-month-wheel, the ionChange should be triggered to return a new date time.

But reality is that it doesn’t call again after it is triggered for the first time. Even I spin or click the year-month-wheel multiple times again.

On the other hands, day works differently, you constantly get a response everytime you click it.

Anyone has the same issue or is it just me?

Just want to add that [multiple]=true seems to be the root of the problem.
I tried the ion-dateTime without the [multiple]=true property.
Works fine.