Ionic tabs loading automatically with out clicking

Ionic Framework ionic-v3
1

I have code page.html to create tabs

<ion-tabs>
      <ion-tab [root]="page1" [rootParams]="chatParams" tabTitle="Chat" tabIcon="chat"></ion-tab>
 </ion-tabs>

and in page.ts is like below

export class samplePage {
  page1: any = CarListPage;
  page2: any = CarListPage;
  page3: any = CarListPage;
  constructor(
    public navCtrl: NavController,
    public navParams: NavParams,
    public bookingService: BookingProvider,
  ) {
  }

when I open the page, the tab page is also displaying which is assigned in page.ts. Why it is displaying automatically without clicking that page could any please help me in this regard. It might be great help