为什么最初的Entity Framework Core添加迁移会跳过配置？

Question

在添加迁移时，似乎会跳过部分配置。

    protected override void OnModelCreating(ModelBuilder modelBuilder)
    {
        modelBuilder.ApplyConfiguration(new CustomerConfig());
    }

public class CustomerConfig : IEntityTypeConfiguration<Domain.Customer>
{
    public void Configure(EntityTypeBuilder<Domain.Customer> builder)
    {
        builder.ToTable(nameof(Domain.Customer));
        builder.OwnsOne(
            o => o.Created,
            sa =>
            {
                sa.Property(p => p.Reason).HasMaxLength(255).IsUnicode(false);
            }
        );

        builder.Property(x => x.TenantId).IsRequired();
        builder.Property(x => x.RowVersion).IsRowVersion();

        builder.HasKey(x => new { x.TenantId, x.ProviderId, x.ProviderKey });
        builder.Property(x => x.ProviderKey).HasMaxLength(50).IsUnicode(false);

        builder.Property(x => x.DisplayName).HasMaxLength(255).IsUnicode(false);
    }
}

正在生成：

    protected override void Up(MigrationBuilder migrationBuilder)
    {
        migrationBuilder.CreateTable(
            name: "Customer",
            columns: table => new
            {
                TenantId = table.Column<Guid>(nullable: false),
                RowVersion = table.Column<byte[]>(rowVersion: true, nullable: true),
                Created_SessionId = table.Column<Guid>(nullable: true),
                Created_At = table.Column<DateTimeOffset>(nullable: true),
                Created_Reason = table.Column<string>(unicode: false, maxLength: 255, nullable: true),
                ProviderId = table.Column<Guid>(nullable: false),
                ProviderKey = table.Column<string>(nullable: false),
                DisplayName = table.Column<string>(unicode: false, maxLength: 255, nullable: true)
            },
            constraints: table =>
            {
                table.PrimaryKey("PK_Customer", x => new { x.TenantId, x.ProviderId, x.ProviderKey });
            });
    }

Domain.Customer.ProviderKey配置似乎未在迁移中应用。

可以找到完整的项目https://github.com/CodeThumper/EFCoreMigrationSample