[TestMethod]
    public async Task NoStaticListTest()
    {
        var ctx = new NoStaticListDbContext();
        ctx.Database.EnsureCreated();
        ctx.Es.Add(new E() { Id = "1", City = "A" });
        ctx.Es.Add(new E() { Id = "2", City = "B" });
        await ctx.SaveChangesAsync();
        ctx.ChangeTracker.Clear();

        var result = await ctx.Es.Select(_ => new EDto { Id = _.Id, Sources = new List<string> { "NoStaticListDbContext" }, Addresses = new List<Address> { new Address { City = _.City } } }).ToListAsync();
        result[0].Sources.Add("b");
        result[1].Sources.Should().HaveCount(1);
    }

    public class NoStaticListDbContext : DbContext
    {
        public DbSet<E> Es { get; set; }
        protected override void OnConfiguring(DbContextOptionsBuilder optionsBuilder)
        {
            optionsBuilder.UseSqlServer(@"Data Source=localhost;Database=One;Integrated Security=True;Trust Server Certificate=True");
        }

    }
    public class E
    {
        public string Id { get; set; }
        //public string Zip { get; set; }
        public string City { get; set; }
        //public string Street { get; set; }
        //public string Number { get; set; }
    }
    public class EDto
    {
        public string Id { get; set; }
        public List<string> Sources { get; set; }
        public List<Address> Addresses { get; set; }
    }
    public class Address
    {
        public string City { get; set; }
    }