Authenticated user doesn't get updated in AngularFire - angularjs

Question

I'm using the AngularFire example for ui-router.
// for ui-router
app.run(["$rootScope", "$state", function($rootScope, $state) {
$rootScope.$on("$stateChangeError", function(event, toState, toParams, fromState, fromParams, error) {
if (error === "AUTH_REQUIRED") {
$state.go("home");
}
});
}]);
app.config(["$stateProvider", function ($stateProvider) {
$stateProvider
.state("home", {
controller: "HomeCtrl",
templateUrl: "views/home.html",
resolve: {
"currentAuth": ["Auth", function(Auth) {
return Auth.$waitForAuth();
}]
}
})
.state("account", {
controller: "AccountCtrl",
templateUrl: "views/account.html",
resolve: {
"currentAuth": ["Auth", function(Auth) {
return Auth.$requireAuth();
}]
}
});
}]);
app.controller("HomeCtrl", ["currentAuth", function(currentAuth) {
}]);
app.controller("AccountCtrl", ["currentAuth", function(currentAuth) {
}]);
Everything works for the first user. The problem is that when the first user logs out and the second one logs in, the "currentAuth" still holds the first user's information. Why doesn't it get updated with the new login?
It actually gets updated if I refresh the page, but how can I load the new data without refreshing?