Exception when using KeyboardInteractiveAuthenticationMethod if account have no access to shell

I'm trying to use one of my servers as Socks5 proxy, for this purpose i've created special user with disabled shell access(default shell /sbin/nologin). On connect i got this error:

Message:
"String reference not set to an instance of a String. (Parameter 's')"
Stack trace:
" in Renci.SshNet.KeyboardInteractiveAuthenticationMethod.Authenticate(Session session)\n in Renci.SshNet.AuthenticationMethod.Renci.SshNet.IAuthenticationMethod.Authenticate(ISession session)\n in Renci.SshNet.ClientAuthentication.TryAuthenticate(ISession session, AuthenticationState authenticationState, String[] allowedAuthenticationMethods, SshAuthenticationException& authenticationException)\n in Renci.SshNet.ClientAuthentication.Authenticate(IConnectionInfoInternal connectionInfo, ISession session)\n in Renci.SshNet.ConnectionInfo.Authenticate(ISession session, IServiceFactory serviceFactory)\n in Renci.SshNet.Session.Connect()\n в Renci.SshNet.BaseClient.Connect()\n в test.TargetService.d__12.MoveNext() "

Start at Renci.SshNet.KeyboardInteractiveAuthenticationMethod.Authenticate, using the provided stack trace and the nologin account scenario to reproduce the failure. Determine how authentication behaves when the account has no shell access; done means the scenario no longer produces the reported String-parameter exception and its resulting behavior is covered by a regression test.