Mapping Azure AD Claims into my AspNet Core App

Question

I have a webapp which is protected by Azure AD in the portal.

If I go to this url for example: myapp.azurewebsites.net/.auth/me, I can see the available claims in my browser.

If I look in the ClaimPrincipal, they are empty.

My Startup.cs is very basic:

    public void ConfigureServices(IServiceCollection services)
    {
        services.AddMvc()
            .SetCompatibilityVersion(CompatibilityVersion.Version_2_1);

    }

    public void Configure(IApplicationBuilder app, IHostingEnvironment env)
    {
        app.UseStaticFiles();

        app.UseMvc(routes =>
        {
            routes.MapRoute(
                name: "default",
                template: "{controller=Home}/{action=Index}/{id?}");
        });
    }

Why is there no mapping from what I see in my brother to the webapp?