Can't bind model in Route::model after upgrade laravel 5.2 to 5.3

This code worked in laravel 5.2 But don't work in laravel 5.3. I have in RouteServiceProvider:

\Route::model('users', \App\User::class, function ($value) {
    return User::where('name', $value)
              ->first();
});

In my blades I ask for action:

'<a href=""></a>'

And in my UserController

public function show($user)
{
    return view('users.user.show', compact('user'));
}

And now $user is only Auth::user()->nameFor example 'qwerty'. But not the object of class User how it has been earlier. What can be a problem?

via Chebli Mohamed