My menu-toggle button is disappearing

My menu-toggle button is disappearing after $state.go();

My index.html
`

<ion-side-menu-content>
	<ion-nav-bar class="bar-positive" align-title="center">
		<ion-nav-buttons side="left">
			<button class="button button-icon button-clear ion-navicon" menu-toggle="left"></button>
		</ion-nav-buttons>

		<ion-nav-back-button class="button-clear">
			<i class="ion-arrow-left-c"></i> Voltar
		</ion-nav-back-button>
	</ion-nav-bar>

	<ion-nav-view></ion-nav-view>

</ion-side-menu-content>

`

after successful sign in :
$state.go('home');

my home (I don't wanna a back button on home):
<ion-view hide-back-button="true">
<ion-nav-title> Pontuação </ion-nav-title>
<ion-content>
content
</ion-content>
</ion-view>