title: Laravel auth user not working in welcome page
body: <p>i am new with laravel. And i got this issue.
  I have this routes:</p>
  
  <pre><code>Route::get('/', 'PublicController@index');
  
  Route::group(['middleware' =&gt; ['web','admin']], function ($username) {
      Route::get('/admin', 'Admin\AdminController@index');
      Route::controller('/admin/user', 'Admin\UserController');
  });
  </code></pre>
  
  <p>In admin page, it shows my login and register button replaced by the user name. But when i go to public page / the user name disappear and showing login and register button instead. Its not get logged out yet, if i back to admin page, i still logged in.</p>
  
  <p>Can someone help me out with explanation, what happended and what should i do??
  thank you..</p>