Ionic v2 Pinch doesn't trigger?

Ionic Framework ionic-v3
4

I’ve noticed similar inconsistent behavior, where the pinchcancel or pinchend event got fired “without a reason”. The laggy part most likely comes from the view still being able to scroll. Conditionally adding a CSS class to <ion-content>, that sets the overflow-y to hidden, will get rid of the laggyness. Nevertheless, I’d suggest taking a look at my latest comment, there I refer to an article that looks closer to the whole pinch event: Pinch Gesture is not working

<ion-content [class.disable-scrolling]='isScrolling'>

ion-content.disable-scrolling .scroll-content {
    overflow-y: hidden;
}

public onPinchStart(e) {
  this.isScrolling = this.content.isScrolling;
}

public onPinchStart(e) {
  this.isScrolling = false;
}