System.ArgumentException: Arg_MustBeDateTime
  at int DateTime.CompareTo(object value)()
  at int Comparer.Compare(object a, object b)()
  at int SortFieldComparer.Compare(object o1, object o2)()
  at int ArraySortHelper<object>.InternalBinarySearch(object[], int, int, object, IComparer<object>)()
  at int ArraySortHelper<object>.BinarySearch(object[], int, int, object, IComparer<object>)()

System.InvalidOperationException: InvalidOperation_IComparerFailed
  at int ArraySortHelper<object>.BinarySearch(object[], int, int, object, IComparer<object>)()
  at int Array.BinarySearch<object>(object[] array, int index, int length, object value, IComparer<object> comparer)()
  at int List<object>.BinarySearch(int, int, object, IComparer<object>) x 2()
  at int Group.IndexOf(object item, IComparer<object> sortComparer)()
  at Tuple<Group, int> ParallelDataEngine.FindGroupAndItemIndex(IValueProvider valueProvider, Group rowRootGroup, object item, int index, bool exhaustiveSearch, bool canUseComparer)()
  at AddRemoveItemResult ParallelDataEngine.RemoveItem(IAggregateResultProvider aggregateResultProvider, IValueProvider valueProvider, Group rowRootGroup, Group columnRootGroup, object item, int index, bool exhaustiveSearch, bool canUseComparer)()
  at List<AddRemoveResult> ParallelDataEngine.Process(int index, IEnumerable items, bool remove, bool removeFilteredItem, bool canUseComparer)()
  at List<AddRemoveResult> ParallelDataEngine.Telerik.Maui.Data.IDataEngine.RemoveItems(int index, IEnumerable items, bool removeFilteredItem, bool canUseComparer)()
  at List<AddRemoveResult> LocalDataSourceProvider.RemoveItems(int oldStartingIndex, IList oldItems, NotifyCollectionChangedEventArgs e, bool doExhaustiveSearch, bool canUseComparer)()
  at void LocalDataSourceProvider.ProcessCollectionChanged(NotifyCollectionChangedEventArgs e)()
  at void LocalDataSourceProvider.DataView_CollectionChanged(object sender, NotifyCollectionChangedEventArgs e)()
  at void EnumerableDataSourceView.RaiseCollectionChanged(object sender, NotifyCollectionChangedEventArgs args)()
  at void EnumerableDataSourceView.ProcessCollectionChanged(object sender, NotifyCollectionChangedEventArgs e)()
  at void EnumerableDataSourceView.ProcessCollectionChangedOverride(object sender, NotifyCollectionChangedEventArgs args)()
  at void EnumerableDataSourceView.ProcessPendingCollectionChange()()
  at void DataProviderBase.RaiseViewChanging(object sender, IList changedItems, CollectionChange action)()
  at void LocalDataSourceProvider.DataView_CollectionChanging(object sender, NotifyCollectionChangedEventArgs e)()
  at void EnumerableDataSourceView.RaiseCollectionChanging(object sender, NotifyCollectionChangedEventArgs args)()
  at void EnumerableDataSourceView.HandleCollectionChangedOverride(object sender, NotifyCollectionChangedEventArgs e)()
  at void EnumerableDataSourceView.Telerik.Maui.IWeakEventListener.ReceiveEvent(object sender, object args)()
  at void WeakEventHandlerList<NotifyCollectionChangedEventArgs>.ProcessEvent(object sender, object args)()
  at void WeakEventHandlerList<NotifyCollectionChangedEventArgs>.OnCollectionChanged(object sender, NotifyCollectionChangedEventArgs e)()
  at void ObservableCollection<IWorkItemListItem>.OnCollectionChanged(NotifyCollectionChangedEventArgs) x 2()
  at void ObservableCollection<IWorkItemListItem>.RemoveItem(int)()
  at bool Collection<IWorkItemListItem>.Remove(IWorkItemListItem)()