Keyboard interactive prompt not called

I have configured my Windows Open SSH Server to support keyboard interactive. When I attempt to connect I do not receive the authentication prompt callback but instead immediately get the following error:

Permission denied (keyboard-interactive).

This is my code:

var keyboardInteractiveAuth = new KeyboardInteractiveAuthenticationMethod(sftpClientCfg.User);
keyboardInteractiveAuth.AuthenticationPrompt += (sender, args) =>
{
    foreach (var authenticationPrompt in args.Prompts)
        authenticationPrompt.Response = sftpClientCfg.Pswd;
};

var connectionInfo = new ConnectionInfo(name, sftpClientCfg.Port, sftpClientCfg.User, new[] { keyboardInteractiveAuth });
using (var client = new SshClient(connectionInfo))
{
    client.Connect();
    Console.WriteLine("Connected");
}

And finally the server is logging the following errors:

userauth-request for user mike service ssh-connection method keyboard-interactive [preauth]
attempt 1 failures 0 [preauth]
keyboard-interactive devs [preauth]
auth2_challenge: user=mike devs= [preauth]
kbdint_alloc: devices '' [preauth]

When the server is configured to support either PasswordAuthentication or PubkeyAuthentication I am able to connect. This is the only method that is failing. I do not know if the server is incorrectly configured or if there is an issue with how I am connecting.

Start with the KeyboardInteractiveAuthenticationMethod and ConnectionInfo entry points shown in the example, then reproduce the connection against the Windows OpenSSH configuration while reviewing the server's keyboard-interactive log. Done means determining whether the callback should be invoked for this server response and identifying a confirmed library or server-side cause.