Ionic Popover dismiss

Ionic Framework ionic-v3
1

I have a strange behavior with the use of popOver. When I click popOver to move to another page. and return to the previous page, the popOver stays there and it is not rejected.
How do I get popover dismiss when I leave the page using Events?

this is my code:

  displayPopOver(event) {
    let popover = this.popoverCtrl.create(PopOeverToModifPrelevementPage);
    popover.present({ ev: event });
}

export class PopOeverToGoAnotherPage {
  constructor( public navCtrl: NavController, public navParams: NavParams) {
  }
  goToAddPrelevementWithOutStrategie() {
    this.navCtrl.push(PrelevementWithOutStrategiePage);
  }
}
2

use
this.navCtrl.pop();

3

The view of PrelevementWithOutStrategiePage is not preserved. I used this.viewCtrl.dismiss();