RadzenDropDownDataGrid filtering not working

I'm trying to add filtering to the RadzenDropDownDataGrid but I can't seem to get it to work. In fact nothing happens when I type anything in the search field. I've been through the documentation and it seems pretty straight forward but I must be missing something.

Any idea on what I'm doing wrong?

@using RLI.ContracPac.Experience.Client.Models.ClassCode;
@using RLI.ContracPac.Experience.Client.Models.Quote;
@inject DialogService dialogService

<div class="class-code-input">
	<RadzenPanel Class="rz-m-0" Style="border: thin; color: black; border-style: solid;">
		<HeaderTemplate>
			<RadzenStack Gap="0">
			<RadzenText TextStyle="TextStyle.H6"><b>Type of work</b></RadzenText>
			<br />
			<RadzenText TextStyle="TextStyle.Subtitle1">Describe the owner's primary operation</RadzenText>
			</RadzenStack>
		</HeaderTemplate>
		<ChildContent>
			<RadzenStack Gap="5">				
				@foreach (var classCodeControl in ClassCodes!)
				{
					var indexOf = ClassCodes.IndexOf(classCodeControl);
					var uniqueControlName = $"ClassCodeDropDown{indexOf}";
					<RadzenStack Orientation="Orientation.Vertical">
						<RadzenStack Orientation="Orientation.Horizontal">
							<RadzenDropDownDataGrid Name=@uniqueControlName Data=@ClassCodeModels AllowColumnResize="true" @bind-Value=classCodeControl.ClassCode FilterCaseSensitivity="FilterCaseSensitivity.CaseInsensitive"
													ValueProperty="ClassCodeNumber" TextProperty="Description" Style="min-width:600px" AllowFiltering="true"
													FilterOperator="StringFilterOperator.Contains" AllowFilteringByAllStringColumns="true">
								<Columns>
									<RadzenDropDownDataGridColumn Property="ClassCodeNumber" Title="ISO" Width="100px" />
									<RadzenDropDownDataGridColumn Property="Description" Title="Description" Width="350px" />
									<RadzenDropDownDataGridColumn>
										<Template Context="data">
											<RadzenButton Variant="Variant.Filled" Click=@(args => OpenClassCodeDialog(@data.ClassCodeNumber)) Style="border: none; color: black;" Text="Details" />
										</Template>
									</RadzenDropDownDataGridColumn>
								</Columns>
							</RadzenDropDownDataGrid>
							<RadzenButton Click=@(args => ClassCodeDeleted(@indexOf)) Visible=@(classCodeControl.IsPrimaryOperation != true) ButtonStyle="ButtonStyle.Danger" Icon="delete"></RadzenButton>
						</RadzenStack>
						<RadzenRequiredValidator Component=@uniqueControlName Text="You must enter a class code" Style="font-weight: bold; padding: 5px" />
					</RadzenStack>
				}
				<RadzenButton Variant="Variant.Text" Visible="ClassCodes!.Count != 3" Click=@(args => AddNewClassCodeControl()) Style="border: none; color: black;" Text="Add another type of work" />
			</RadzenStack>
		</ChildContent>
	</RadzenPanel>
</div>
@code {
	[Parameter]
	public List<ClassModel>? ClassCodes { get; set; } 
	[Parameter]
	public EventCallback<List<ClassModel>?> ClassCodesChanged { get; set; }
	[Parameter]
	public DateTimeOffset? EffectiveDate { get; set; }
	[Parameter]
	public bool ShowDeleteButton { get; set; }

	private List<ClassCodeModel>? ClassCodeModels { get; set; }

	protected override void OnInitialized()
	{
		base.OnInitialized();

		if (ClassCodes!.Count() == 0)
			ClassCodes!.Add(new ClassModel() { IsPrimaryOperation = true });

		//Get all class codes to populate drop down
		ClassCodeModels = GetClassCodes();
	}

	protected async Task OpenClassCodeDialog(string classCodeNumber)
	{
		await dialogService.OpenAsync<ClassCodeDialogCard>("",
				new Dictionary<string, object>() { { "ClassCode", classCodeNumber! }, { "EffectiveDate", EffectiveDate! } },
				new DialogOptions() { Width = "40%", Height = "95%", Resizable = true }).ConfigureAwait(false);
	}

	private void AddNewClassCodeControl()
	{
		ClassCodes!.Add(new ClassModel());
	}

	private void ClassCodeDeleted(int index)
	{
		ClassCodes!.RemoveAt(index);
	}

	private List<ClassCodeModel> GetClassCodes()
	{
		//TODO: Replace with call to QuestionSet API to get all class code questions
		var classCodes = new List<ClassCodeModel>();
		classCodes.Add(new ClassCodeModel() { ClassCodeNumber = "91340", Description = "General Contractor - Commercial Carpentry/NOC" });
		classCodes.Add(new ClassCodeModel() { ClassCodeNumber = "91341", Description = "Interior Finish Carpentry" });
		classCodes.Add(new ClassCodeModel() { ClassCodeNumber = "92215", Description = "Driveway, Parking Area, or Sidewalk Paving or repaving" });
		classCodes.Add(new ClassCodeModel() { ClassCodeNumber = "94569", Description = "Floor Covering Installation" });
		classCodes.Add(new ClassCodeModel() { ClassCodeNumber = "99746", Description = "Tile, Stone, Marble, Mosiac or Terrazzo Work" });

		return classCodes;
	}
}

Please post runnable code or use our demos to replicate your case.