System.NotImplementedException in ETS 6

[Matze5800]

ETS 6 shows an error message when you try to open it with retrobar running.

This is the corresponding log entry:

2024-08-07 10:33:31,430 [1] ERROR ETS.EtsBootstrapper - System.NotImplementedException: Die Methode oder der Vorgang ist nicht implementiert.
bei MS.Internal.AppModel.ITaskbarList.HrInit()
bei System.Windows.Window.ApplyTaskbarItemInfo()
bei System.Windows.Window.OnTaskbarItemInfoChanged(DependencyPropertyChangedEventArgs e)
bei System.Windows.Window.<>c.<.cctor>b__0_0(DependencyObject d, DependencyPropertyChangedEventArgs e)
bei System.Windows.DependencyObject.OnPropertyChanged(DependencyPropertyChangedEventArgs e)
bei System.Windows.FrameworkElement.OnPropertyChanged(DependencyPropertyChangedEventArgs e)
bei System.Windows.DependencyObject.NotifyPropertyChange(DependencyPropertyChangedEventArgs args)
bei System.Windows.DependencyObject.UpdateEffectiveValue(EntryIndex entryIndex, DependencyProperty dp, PropertyMetadata metadata, EffectiveValueEntry oldEntry, EffectiveValueEntry& newEntry, Boolean coerceWithDeferredReference, Boolean coerceWithCurrentValue, OperationType operationType)
bei System.Windows.DependencyObject.SetValueCommon(DependencyProperty dp, Object value, PropertyMetadata metadata, Boolean coerceWithDeferredReference, Boolean coerceWithCurrentValue, OperationType operationType, Boolean isInternal)
bei System.Windows.DependencyObject.SetValue(DependencyProperty dp, Object value)
bei System.Windows.Window.set_TaskbarItemInfo(TaskbarItemInfo value)
bei Knx.Ets.ViewModel.Service.TaskbarProgressManager.Initialize(Window window)
bei Knx.Ets.ViewModel.ApplicationViewModel.OpenFirstWindow(Exception licensingException, StartupOptions startupOptions)

Link to Installer for ETS 6