Blazor index page captures static files

var builder = WebApplication.CreateBuilder(args);

builder.Services.AddRazorComponents();
...
app.UseStaticFiles();
...
app.MapRazorComponents<App>();
...
app.Run();

@page "/"
@page "/{IdOrSlug}"
...
//markup
...
@code {
    [Parameter]
    public string IdOrSlug { get; set; }

    private Questionnaire _questionnaire;
    private Response _response = new();
    private Dictionary<string, Answer> _answers = new();
    private bool _loading = true;

    protected override async Task OnInitializedAsync()
    {
        _questionnaire = await DatabaseService.GetQuestionnaireByIdOrSlug(IdOrSlug);

        if (_questionnaire == null)
        {
            var uri = new Uri(NavigationManager.Uri);
            Console.WriteLine(uri); // this prints all css assets, favicon.png too etc.
            _questionnaire = await DatabaseService.GetQuestionnaireByDomain(uri.Host); 
        }

        if (_questionnaire != null)
        {
            _response.QuestionnaireId = _questionnaire.Id;
            foreach (var question in _questionnaire.Questions)
            {
                _answers[question.Id] = new Answer { QuestionId = question.Id };
            }
        }

        _loading = false;
    }

    private void HandleRatingChange(string questionId, int rating)
    {
        _answers[questionId].RatingAnswer = rating;
    }

    private async Task HandleSubmit()
}