IdentityServer3：某些声明未从身份服务器返回

使用IdentityServer3的过程中，有时候可能会遇到某些声明未从身份服务器返回的问题。这个问题可能会导致一些功能无法正常使用，因此我们需要找出问题的原因并解决它。

csharp
var clients = new List
{
    new Client
    {
        ClientId = "client",
        ClientName = "Client Application",
        AllowedGrantTypes = GrantTypes.Implicit,
        RedirectUris = new List
        {
            "https://localhost:5001/signin-oidc"
        },
        PostLogoutRedirectUris = new List
        {
            "https://localhost:5001/signout-callback-oidc"
        },
        AllowedScopes = new List
        {
            "openid",
            "profile",
            "email"
        },
        RequireConsent = false
    }
};
var identityResources = new List
{
    new IdentityResources.OpenId(),
    new IdentityResources.Profile(),
    new IdentityResources.Email()
};
var options = new IdentityServerOptions
{
    RequireSsl = false,
    SigningCertificate = new X509Certificate2(
        Path.Combine(AppDomain.CurrentDomain.BaseDirectory, "idsrv3test.pfx"), "idsrv3test"),
    Factory = new IdentityServerServiceFactory()
        .UseInMemoryClients(clients)
        .UseInMemoryIdentityResources(identityResources)
};
app.UseIdentityServer(options);

csharp
var options = new OpenIdConnectOptions
{
    AuthenticationScheme = "oidc",
    Authority = "https://localhost:5000",
    ClientId = "client",
    ClientSecret = "secret",
    ResponseType = "code id_token",
    Scope = { "openid", "profile", "email" },
    SignInScheme = "Cookies",
    SaveTokens = true
};