CheckBoxList Filter not updating values

Radzen.Blazor Components
1

The CheckBoxList Filter isn't updating the selectable values after changing the data in the DataGrid. I have a DropDown that when the value is changed, loads data used by a Data Grid with FilterMode.CheckBoxList like the example below.

Select an order ID from the dropdown
Click the Order Filter, note the value available
Select a different order ID from the dropdown
Click the Order Filter, note the value available hasn't changed.

If you clear, next time you open it will be updated. Sometimes opening/closing other filters updates it.
It happens when columns' AllowCheckBoxListVirtualization is true or false.

I used DataGridMasterDetail.razor as the base to make this example:

@using RadzenBlazorDemos.Data
@using RadzenBlazorDemos.Models.Northwind
@using Microsoft.EntityFrameworkCore

@inherits DbContextPage

@if (orders == null)
{
    <p><em>Loading...</em></p>
}
else
{
    <RadzenStack Orientation="Orientation.Horizontal" AlignItems="AlignItems.Center" JustifyContent="JustifyContent.Center" Gap="0.5rem" class="rz-p-sm-12">
        <RadzenLabel Text="Select Value" Component="DropDownBindValue" ValueChanged="OnSelectedJudgeChanged" />
        <RadzenDropDown TValue="Order" Data=@AllOrders Style="width: 100%; max-width: 400px;" Name="DropDownBindValue" ValueChanged="OnSelectedItemChanged"
        TextProperty="OrderID">

    </RadzenDropDown>
    </RadzenStack>

    <RadzenDataGrid 
    Data="@(SelectedOrders)"
    FilterMode="FilterMode.CheckBoxList"
    AllowColumnReorder="true"
    AllowCompositeDataCells="true"
    AllowGrouping="true"
    AllowColumnPicking="true"
    AllowPickAllColumns="true"
    ColumnsPickerAllowFiltering="true"
    AllowSorting="true"
    AllowMultiColumnSorting=true
    ShowMultiColumnSortingIndex="true"
    AllowFiltering="true"
    FilterCaseSensitivity=FilterCaseSensitivity.CaseInsensitive
    FilterDelay="10">
        <Columns>
            <RadzenDataGridColumn Property="Order.CustomerID" Title="Order" AllowCheckBoxListVirtualization="false"/>
            <RadzenDataGridColumn Property="Product.ProductName" Title="Product" />
            <RadzenDataGridColumn Property="UnitPrice" Title="Unit Price">
                <Template Context="detail">
                    @String.Format(new System.Globalization.CultureInfo("en-US"), "{0:C}", detail.UnitPrice)
                </Template>
            </RadzenDataGridColumn>
            <RadzenDataGridColumn Property="@nameof(OrderDetail.Quantity)" Title="Quantity" />
            <RadzenDataGridColumn Property="@nameof(OrderDetail.Discount)" Title="Discount">
                <Template Context="detail">
                    @String.Format("{0}%", detail.Discount * 100)
                </Template>
            </RadzenDataGridColumn>
        </Columns>
    </RadzenDataGrid>


}

@code {
    IList<Order> AllOrders ;
    IList<OrderDetail> SelectedOrders { get; set; }

    IQueryable<Order> orders;

    protected override async Task OnInitializedAsync()
    {
        await base.OnInitializedAsync();

        orders = dbContext.Orders
            .Include("Customer")
            .Include("Employee")
            .Include("OrderDetails")
            .Include("OrderDetails.Product");

        AllOrders = orders.ToList();
        // SelectedOrders = new List<Order>(){ orders.FirstOrDefault() };
    }

    private async Task OnSelectedItemChanged(Order order) 
    {
        await Task.Delay(10);

        SelectedOrders = order.OrderDetails.ToList();

    }
}
2

Here is an example how to improve this code:

@using RadzenBlazorDemos.Data
@using RadzenBlazorDemos.Models.Northwind
@using Microsoft.EntityFrameworkCore

@inherits DbContextPage

@if (orders == null)
{
    <p><em>Loading...</em></p>
}
else
{
    <RadzenStack Orientation="Orientation.Horizontal" AlignItems="AlignItems.Center" JustifyContent="JustifyContent.Center" Gap="0.5rem" class="rz-p-sm-12">
        <RadzenLabel Text="Select Value" Component="DropDownBindValue" ValueChanged="OnSelectedJudgeChanged" />
        <RadzenDropDown TValue="Order" Data=@AllOrders Style="width: 100%; max-width: 400px;" Name="DropDownBindValue" ValueChanged="OnSelectedItemChanged"
        TextProperty="OrderID">

    </RadzenDropDown>
    </RadzenStack>

    <RadzenDataGrid 
    @ref=grid
    Data="@(SelectedOrders)"
    FilterMode="FilterMode.CheckBoxList"
    AllowColumnReorder="true"
    AllowCompositeDataCells="true"
    AllowGrouping="true"
    AllowColumnPicking="true"
    AllowPickAllColumns="true"
    ColumnsPickerAllowFiltering="true"
    AllowSorting="true"
    AllowMultiColumnSorting=true
    ShowMultiColumnSortingIndex="true"
    AllowFiltering="true"
    FilterCaseSensitivity=FilterCaseSensitivity.CaseInsensitive
    FilterDelay="10">
        <Columns>
            <RadzenDataGridColumn Property="Order.CustomerID" Title="Order" AllowCheckBoxListVirtualization="false"/>
            <RadzenDataGridColumn Property="Product.ProductName" Title="Product" />
            <RadzenDataGridColumn Property="UnitPrice" Title="Unit Price">
                <Template Context="detail">
                    @String.Format(new System.Globalization.CultureInfo("en-US"), "{0:C}", detail.UnitPrice)
                </Template>
            </RadzenDataGridColumn>
            <RadzenDataGridColumn Property="@nameof(OrderDetail.Quantity)" Title="Quantity" />
            <RadzenDataGridColumn Property="@nameof(OrderDetail.Discount)" Title="Discount">
                <Template Context="detail">
                    @String.Format("{0}%", detail.Discount * 100)
                </Template>
            </RadzenDataGridColumn>
        </Columns>
    </RadzenDataGrid>


}

@code {
    RadzenDataGrid<OrderDetail> grid;
    IList<Order> AllOrders ;
    IList<OrderDetail> SelectedOrders { get; set; }

    IQueryable<Order> orders;

    protected override async Task OnInitializedAsync()
    {
        await base.OnInitializedAsync();

        orders = dbContext.Orders
            .Include("Customer")
            .Include("Employee")
            .Include("OrderDetails")
            .Include("OrderDetails.Product");

        AllOrders = orders.ToList();
        // SelectedOrders = new List<Order>(){ orders.FirstOrDefault() };
    }

    private async Task OnSelectedItemChanged(Order order) 
    {
        await Task.Delay(10);

        grid.Reset(true);

        SelectedOrders = order.OrderDetails.ToList();
    }
}