Bug in nopcommerce 4.60.2 (user is not logged in after registring)

There is a bug that doesn't log in the user after successfully registering when registration method is set to 'standard account creation'. My guess is that somehow the code is running too quickly.
After a bit of investigation, I found out that the problem is in

Libraries\Nop.Services\Authentication\CookieAuthenticationService.cs at this line await _httpContextAccessor.HttpContext.SignInAsync(NopAuthenticationDefaults.AuthenticationScheme, userPrincipal, authenticationProperties);

How to reproduce
create a few accounts (sometimes it works fine), and make sure you have no breakpoints.

Running webapp with breakpoints before

var authenticationProperties = new AuthenticationProperties 

or in other register methods, everything works fine again. The temporary workaround: I use await Task.Delay(1000); before var authenticationProperties

public virtual async Task SignInAsync(Customer customer, bool isPersistent)
        {
            if (customer == null)
                throw new ArgumentNullException(nameof(customer));

            //create claims for customer's username and email
            var claims = new List<Claim>();

            if (!string.IsNullOrEmpty(customer.Username))
                claims.Add(new Claim(ClaimTypes.Name, customer.Username, ClaimValueTypes.String, NopAuthenticationDefaults.ClaimsIssuer));

            if (!string.IsNullOrEmpty(customer.Email))
                claims.Add(new Claim(ClaimTypes.Email, customer.Email, ClaimValueTypes.Email, NopAuthenticationDefaults.ClaimsIssuer));

            //create principal for the current authentication scheme
            var userIdentity = new ClaimsIdentity(claims, NopAuthenticationDefaults.AuthenticationScheme);
            var userPrincipal = new ClaimsPrincipal(userIdentity);

            await Task.Delay(1000);

            //set value indicating whether session is persisted and the time at which the authentication was issued
            var authenticationProperties = new AuthenticationProperties
            {
                IsPersistent = isPersistent,
                IssuedUtc = DateTime.UtcNow
            };

            //sign in
            await _httpContextAccessor.HttpContext.SignInAsync(NopAuthenticationDefaults.AuthenticationScheme, userPrincipal, authenticationProperties);

            //cache authenticated customer
            _cachedCustomer = customer;
        }

Thanks a lot for report. We'll check it soon - https://github.com/nopSolutions/nopCommerce/issues/6670