OData Detla<Entity>Patch not updating

Question

I'm currently trying to hack Odata when updating.

I have the following model:

public class Patient
{
    [DataMember]
    [JsonPropertyName("id")]
    public string Id { get; set; }
    
    [DataMember]
    [JsonPropertyName("name")]
    public string? Name { get; set; }

    [DataMember]
    [JsonPropertyName("lastname")] 
    public string? LastName { get; set; }

    [DataMember]
    [JsonPropertyName("dateofbirth")]
    public DateTime DateBirth { get; set; }
}

On the other hand, I have this controller:

[Route("api/v1/patient")]
    public class PatientController:ODataController
    {
        List<Patient> patients = new List<Patient>()
        {
            new Patient()
            {
                Id = "1",
                Name = "A name",
                LastName = "A lastname"
            },
             new Patient()
            {
                Id = "2",
                Name = "A second name",
                LastName = "A second lastname"
            }
        };

        [EnableQuery]
        [HttpGet]
        public async Task<IActionResult> GetAll()
        {
            return Ok(patients);
        }

        [EnableQuery]
        [HttpGet("{id}")]
        public async Task<IActionResult> Get([FromODataUri]string id)
        {
            Patient p = patients.SingleOrDefault(p => p.Id == id) ?? null;

            if (p is null)
            {
                return NotFound();
            }

            return Ok(p);
        }

        [HttpPost]
        public async Task<IActionResult> Post([FromBody]Patient patient)
        {
            var x = patients;
            x.Add(patient);
            return Ok(x);
        }

        [EnableQuery]
        [HttpPatch("{id}")]
        public async Task<IActionResult> Patch([FromODataUri] string id, [FromBody]Delta<Patient> patient)
        {
            if (!ModelState.IsValid)
            {
                throw new System.Web.Http.HttpResponseException(System.Net.HttpStatusCode.BadRequest);
            }

            Patient patientToEdit = patients.SingleOrDefault(p => p.Id == id) ?? null;

            if (patientToEdit is not null)
            {
                patient.Patch(patientToEdit);

                return Ok(patientToEdit);
            }
            else
            {
                return NotFound(patient);
            }
        }
    }

However, the entity is not updating when calling with the following:

Json with name only and response not updating

The Program.cs file looks like the following:

var builder = WebApplication.CreateBuilder(args);

// Add services to the container.

builder.Services.AddControllers();
// Learn more about configuring Swagger/OpenAPI at https://aka.ms/aspnetcore/swashbuckle
builder.Services.AddEndpointsApiExplorer();
builder.Services.AddSwaggerGen();
builder.Services.AddHttpContextAccessor();


builder.Services.AddControllers().AddOData(options => options.Select().Expand().Filter().OrderBy().SetMaxTop(100).Count());
builder.Services.AddODataQueryFilter();

var app = builder.Build();

// Configure the HTTP request pipeline.
if (app.Environment.IsDevelopment())
{
    app.UseSwagger();
    app.UseSwaggerUI();
}

app.UseHttpsRedirection();

app.UseAuthorization();

app.MapControllers();

app.UseRouting();

app.UseODataBatching();
app.UseODataQueryRequest();
app.UseODataRouteDebug();

app.Run();

The Delta patient is showing an empty list of changes when using patient.GetChangedPropertyNames();

Do you know how can I tackle this so I could perform partial patching?