Double click for navigation IONIC 2

Hi there,

I have the next problem with my app. I want to nav between 2 pages using a button. When I click the button the app should change the page pushing in the nav this new page. The problem is that when i click the button, only changes the ion-header of the page, not the content. I need to click twice .

I dont know where is the mistake in my code.

Here the button: <button [navPush]="loginscreenpage" id="btnRegistro" style="border-right:1px solid white">Iniciar sesión</button>