DetectChanges works incorrect when update nested owned entity

[KyMback]

When I try to assign null to nested owned entity after dbContext.ChangeTracker.DetectChanges() ef core assigns to this property previous value (I guess snapshot value)

using Microsoft.EntityFrameworkCore;
using Microsoft.Extensions.DependencyInjection;

var services = new ServiceCollection();
services.AddDbContext<MainDbContext>(e => e.UseInMemoryDatabase("DB"));
var provider = services.BuildServiceProvider();
var dbContext = provider.GetRequiredService<MainDbContext>();

dbContext.Add(new Entity
{
    NestedEntity = new NestedEntity
    {
        NestedNestedEntity1 = new NestedNestedEntity1
        {
            Value = "some value1",
        },
        NestedNestedEntity2 = new NestedNestedEntity2
        {
            Value = "some value2"
        }
    },
});

dbContext.SaveChanges();

var entity = dbContext.Set<Entity>().First();

Write(entity);

entity.NestedEntity = new NestedEntity
{
    NestedNestedEntity1 = new NestedNestedEntity1
    {
        Value = "some new value1",
    },
    NestedNestedEntity2 = null,
};

Write(entity);

dbContext.ChangeTracker.DetectChanges();

Write(entity);

void Write(Entity e)
{
    Console.WriteLine("NestedNestedEntity1: " + e.NestedEntity.NestedNestedEntity1?.Value);
    Console.WriteLine("NestedNestedEntity2: " + e.NestedEntity.NestedNestedEntity2?.Value);
    Console.WriteLine();
}

public class MainDbContext : DbContext
{
    public MainDbContext(DbContextOptions<MainDbContext> options) : base(options)
    {
    }

    protected override void OnModelCreating(ModelBuilder modelBuilder)
    {
        modelBuilder.Entity<Entity>(builder =>
        {
            builder.OwnsOne(e => e.NestedEntity, n1 =>
            {
                n1.OwnsOne(e => e.NestedNestedEntity1, n2 =>
                {
                    n2.Property(e => e.Value).IsRequired();
                });
                n1.OwnsOne(e => e.NestedNestedEntity2, n2 =>
                {
                    n2.Property(e => e.Value).IsRequired();
                });
            });
        });
        
        base.OnModelCreating(modelBuilder);
    }
}

public class Entity
{
    public Guid Id { get; set; }
    public NestedEntity NestedEntity { get; set; }
}

public class NestedEntity
{
    public NestedNestedEntity1? NestedNestedEntity1 { get; set; }
    public NestedNestedEntity2? NestedNestedEntity2 { get; set; }
}

public class NestedNestedEntity1
{
    public string Value { get; set; }
}

public class NestedNestedEntity2
{
    public string Value { get; set; }
}

Output

NestedNestedEntity1: some value1
NestedNestedEntity2: some value2

NestedNestedEntity1: some new value1
NestedNestedEntity2:

NestedNestedEntity1: some new value1
NestedNestedEntity2: some value2

I expect that NestedNestedEntity2 should be also null after DetectChanges but it is what it is

Provider and version information

EF Core version: 6.0.9
Database provider: Microsoft.EntityFrameworkCore.InMemory, Microsoft.EntityFrameworkCore.SqlServer
Target framework: .NET 6.0

[AndriySvyryd]

This is likely fixed in 7.0.0-rc2

[KyMback]

Will it be fixed in .net 6? If yes when?

[ajcvickers]

Note for triage: still repros on latest daily.