Cordova InAppBrowser PDF- iOS

问题:

My code is working but not exactly the way I want. I'm using the plugin cordova-plugin-inappbrowser. I have an anchor tag to click and opens up a pdf. The code is as follows:

$("#lnkTools").click(function(e){
        //e.preventDefault();
        url = 'someExternalLink.pdf';
        var options = {location: 'yes', clearcache: 'no', toolbar:'no', closebuttoncaption: 'DONE?'};

        $cordovaInAppBrowser.open(url, '_blank', options);

}

The problem I'm facing is that, the PDF doesn't open if I don't exit the app, I have to exit the app first and get back in for the PDF to open up. What am I missing? When I try to use _system same thing, before it opens up the browser, I still need to exit the app first.

EDIT:

When I try to change the $urlRouterProvider.otherwise('/app/main'); in my app.js to $urlRouterProvider.otherwise('/app/login'); it's working, well. Why is this like this? when I place a $state.go('app.main') in my login controller, it loops. Is there any way I can get through this?