cTrader BUG

Hello, something in the latest version of ctrader prevents creating objects on the chart to be able to move them with the mouse.
An overload message blocks the following code:

using System;
using cAlgo.API;
using cAlgo.API.Internals;
using cAlgo.API.Indicators;
using cAlgo.Indicators;

namespace cAlgo
{
    [Indicator(IsOverlay = true, TimeZone = TimeZones.UTC, AccessRights = AccessRights.None)]
    public class Tony_test : Indicator
    {


        ChartIcon m_point;

        protected override void Initialize()
        {


            Chart.MouseDown += arg =>
            {
                m_point = Chart.DrawIcon("point_1", ChartIconType.Circle, arg.TimeValue, arg.YValue, Color.Gray);
            };


            Chart.MouseMove += arg =>
            {
                if (m_point != null)
                {
                    m_point.Time = arg.TimeValue;
                    m_point.Y = arg.YValue;
                }
            };


        }

        public override void Calculate(int index)
        {
            // Calculate value at specified index
            // Result[index] = ...
        }
    }
}