BulkCopy throws an Exception with ComplexProperty (Complex Type)

[IT-CASADO]

Following configuration throws an

Data.SqlClient.SqlException : Cannot insert the value NULL into column 'ColumnPropA', table 'IssuesEFCore.dbo.IssueXXXEntities'; column does not allow nulls. INSERT fails.

My Configuration:

	public readonly record struct MyComplexType(string PropA) { }

	public sealed class IssueXXXEntity
	{
		public required int Id { get; set; }

		public required string Name { get; set; }

		public MyComplexType MyComplexType { get; set; } = new MyComplexType("CT-1");
	}


        protected override void OnModelCreating(ModelBuilder modelBuilder)
        {
	        modelBuilder.Entity<IssueXXXEntity>(b =>
	        {
		        b.HasKey(x => new { x.Id });
        
		        b.ComplexProperty(
			        cp => cp.MyComplexType,
			        cp =>
			        {
				        cp.Property(p => p.PropA).HasColumnName("ColumnPropA");
			        }
		        );
	        });
        }

You can find a working repro here. Please run test with name Issue387Test

As a small reminder I changed the connection string for the IssueContext to a different SQL Server instance.