scroll.ts

// - coloca #contentElement no ion-content
// - scrollElement = this.contentElement.nativeElement.getElementsByTagName('ion-scroll');

// - coloca #scrollToElement aonde você quer scrollar
// - scrollToElementTop = this.segmentElement.nativeElement.offsetTop

scrollElement[0].scroll({
    top: scrollToElementTop,
    left: 0,
    behavior: 'smooth'
});