Problem wit external member login + autolinking

Hi, I am trying to get external login with azure b2c to work in umbraco version: 9.4 (+ uSync package installed)

I have added openid connect external login to umbraco and added MicrosoftMemberExternalLoginProviderOptions. I return a Challenge from controller action with following code:

public IActionResult ExternalLogin(string returnUrl)
    {
        return Challenge(
            new AuthenticationProperties
            {
                RedirectUri = "/blog",
                Items = { { "returnUrl", returnUrl } }
            }, Constants.Security.MemberExternalAuthenticationTypePrefix + MicrosoftMemberExternalLoginProviderOptions.SchemeName);
    }

ConfigureServices:

        services.ConfigureOptions<MicrosoftMemberExternalLoginProviderOptions>();
        services.AddUmbraco(_env, _config)
            .AddBackOffice()
            .AddWebsite()
            .AddComposers()
            .AddMemberExternalLogins(logins =>
            {
                logins.AddMemberLogin(
                    memberAuthenticationBuilder =>
                    {
                        memberAuthenticationBuilder.AddOpenIdConnect(
                            memberAuthenticationBuilder.SchemeForMembers(MicrosoftMemberExternalLoginProviderOptions.SchemeName),
                            options =>
                            {
                                options.Authority = $"https://login.microsoftonline.com/{azureB2CTenant}/v2.0";
                                options.ClientId = azureB2CClientId;
                                options.ClientSecret = azureB2CClientSecret;
                                options.CallbackPath = "/signin-microsoft";
                                options.Scope.Add(OpenIdConnectScope.Email);
                                options.ResponseType = OpenIdConnectResponseType.Code; //"code"; 
                                options.ResponseMode = OpenIdConnectResponseMode.Query;// "query";
                                options.UsePkce = true;
                                options.GetClaimsFromUserInfoEndpoint = true;
                            }
                        );
                    });
            })
            .Build();

class MicrosoftMemberExternalLoginProviderOptions is from docs pages:

    public const string SchemeName = "Microsoft";

    public void Configure(string name, MemberExternalLoginProviderOptions options)
    {
        if (name != Constants.Security.MemberExternalAuthenticationTypePrefix + SchemeName)
        {
            return;
        }

        Configure(options);
    }

    public void Configure(MemberExternalLoginProviderOptions options) =>
        options.AutoLinkOptions = new MemberExternalSignInAutoLinkOptions(
            // Must be true for auto-linking to be enabled
            autoLinkExternalAccount: true,

            defaultCulture: null,
         
            defaultIsApproved: true,

            defaultMemberTypeAlias: "Member",

            
            defaultMemberGroups: Array.Empty<string>()
        )
        {
          
            OnAutoLinking = (autoLinkUser, loginInfo) =>
            {
            },
            OnExternalLogin = (user, loginInfo) =>
            {
                return true; 
            },
        };

Redirect to Microsoft login works, and redirect back to /blogs works as well, but it does not create local account. I thought implementing IConfigureNamedOptions< MemberExternalLoginProviderOptions > will take care of that.

This are requests from browser:

What am I missing?
Thank you.


This is a companion discussion topic for the original entry at https://our.umbraco.com/forum/108632-problem-wit-external-member-login-plus-autolinking