EFCore Bulkextension's BulkInsertAsync not setting the id (identity field).

we are using EFCore.BulkExtensions version 6.3.3 and as per this link this issue is fixed in v5.3.7. Anyone aware about whether it is really fixed or am I missing anything here ? We are getting negative id in result variable the below code:

public async Task InsertAsync(List<User> users)
{
     BulkConfig bulkCOnfig = new BulkConfig()
     {       
       SetOutputIdentity = true
     };
     await this.BulkInsertAsync(users, bulkCOnfig);

     var result = users.FirstOrDefault().Id;
}

But if I use BulkInsertOrUpdateAsync then I'm getting Ids all records except the last one.