FilterOperator and FilterValue are not set

Radzen Studio Blazor Server
1

I am using the DataGrid in a highly dynamic application which relies on some JS interop calling InvokeAsync(StateHasChanged) a lot. I witnessed that in that case, the filter settings for the DataGrid get lost, i.e., when the grid is updating the next time, nothing is filtered.

I am currently setting this up like so:

...
                FilterPopupRenderMode="PopupRenderMode.OnDemand"
                LogicalFilterOperator="LogicalFilterOperator.And"
                Value="_selected"
                ValueChanged="OnSelectionChangedAsync"
                LoadData="LoadDataAsync"
                FilterMode="FilterMode.SimpleWithMenu"
                SelectionMode="DataGridSelectionMode.Multiple"
...
        <RadzenDataGridColumn TItem="TestListEntry"
                              Property="TestId"
                              Title="Test ID"
                              FilterOperator="_idFO"
                              FilterValue="_idFV" />

In my code part I have:

    private FilterOperator _idFO;
    private object? _idFV;

However, when setting the filter, _idFV and _idFO are never set. What am I missing? Or do I have to implement my own Filter UI?