Null RowVersion Violates Not-Null Constraint in PostgreSQL

[MrEshboboyev]

Environment Details:

• .NET SDK Version: 9.0.100
• dotnet-ef Version: 9.0.0
• Operating System: Windows 10 x64
• Database: PostgreSQL

Steps to Reproduce:

1. Define a BankAccount entity with a RowVersion property for concurrency control.
2. Configure the RowVersion property using .IsRowVersion().
3. Attempt to save a BankAccount entity to the PostgreSQL database without initializing RowVersion.

Expected Behavior:
Entity should be saved with the RowVersion property automatically managed by Entity Framework Core.

Actual Behavior:
Error message: Npgsql.PostgresException (0x80004005): 23502: null value in column "RowVersion" of relation "BankAccounts" violates not-null constraint.

Full Error Message:

Microsoft.EntityFrameworkCore.DbUpdateException: An error occurred while saving the entity changes. See the inner exception for details.
 ---> Npgsql.PostgresException (0x80004005): 23502: null value in column "RowVersion" of relation "BankAccounts" violates not-null constraint

Code Examples:
Entity Configuration:

public class BankAccount
{
    public int Id { get; set; }
    public decimal Balance { get; set; }
    public byte[] RowVersion { get; set; }
}

DbContext Configuration:

public class ConcurrencyControlDbContext : DbContext
{
    public DbSet<BankAccount> BankAccounts { get; set; }

    protected override void OnModelCreating(ModelBuilder modelBuilder)
    {
        modelBuilder.Entity<BankAccount>()
                    .Property(b => b.RowVersion)
                    .IsRowVersion();
    }
}

Additional Context:

• Verified that the RowVersion property is configured for concurrency control using .IsRowVersion().
• Encountering this issue even after ensuring the RowVersion property is properly defined in the entity model and DbContext.