problem with navigation on ionic v1

I'm doing a navigation between a tab and two views here my app.js configuration

   .state('tab', {
       url: '/tab',
       abstract: true,
       templateUrl: 'templates/tabs.html',
       cache: 'true'
   })

   .state('tab.domiciliarios', {
    url: '/domiciliarios',
    views: {
        'tab-domiciliarios': {
            templateUrl: 'templates/domiciliarios.html',
            controller: 'DashCtrl',
            controller: 'ChatsCtrl'
        }
    }
})

.state('tab.perfilDomiciliario', {
    url: '/perfilDomiciliario/:chatId',
    views: {
        'tab-domiciliarios': {
            templateUrl: 'templates/perfilDomiciliario.html',
            controller: 'ChatDetailCtrl'
        }
    }
})

.state('tab.chats', {
        url: '/chats',
        views: {
            'tab-chats': {
                 templateUrl: 'templates/tab-chats.html',
                controller: 'ChatsCtrl'
            }
        }
    })
.state('tab.chat-detail', {
    url: '/chats/:chatId',
    views: {
        'tab-chats': {
             templateUrl: 'templates/chat-detail.html',
            controller: 'ChatDetailCtrl'
         }
     }
 });

from the tabs I call them in this way

href="#/tab/perfilDomiciliario/{{chat.id}}"
href="#/tab/chats/{{chat.id}}"

at the beginning it works fine after navigating between the views recurrently it stops showing me the back button