blazor cannot get the drop data.

悬赏园豆：5 [待解决问题]

        protected virtual void OnDrop(DragEventArgs args)
        {
            if (!IRootParent.Current.AsType<IEditable>().IsEditable) return;
            Console.WriteLine($"{this.GetType().Name},{this.Id},{new StackFrame(0).GetMethod()}");
            Console.WriteLine(args.DataTransfer.Types.FirstOrDefault());
            //Console.WriteLine(args.DataTransfer.Items.FirstOrDefault().Kind);
            IsAcceptDropState = false;
        }