Inconsistent data between robot and indicator

Why is the data used by a Robot different from the one used by an Indicator?

Version: 3.5

Indicator:

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 TestData : Indicator
    {
        [Parameter(DefaultValue = 0.0)]
        public double Parameter { get; set; }

        [Output("Main")]
        public IndicatorDataSeries Result { get; set; }

        private int lastIndex;
        private MarketSeries targetSeries;
        private string screenText;

        protected override void Initialize()
        {
            lastIndex = 0;
            targetSeries = MarketData.GetSeries(TimeFrame.Hour4);
            screenText = "";
        }


        public override void Calculate(int index)
        {
            if (lastIndex == index)
                return;
            lastIndex = index;

            int targetIndex = targetSeries.OpenTime.GetIndexByTime(MarketSeries.OpenTime[index]);

            string text = string.Format("{0}: {1} - {2}: {3}", MarketSeries.OpenTime[index], MarketSeries.Close[index], targetSeries.OpenTime[targetIndex], targetSeries.Close[targetIndex]);
            screenText = text + "\n" + screenText; 
            Chart.DrawStaticText("test", screenText, VerticalAlignment.Top, HorizontalAlignment.Right, Color.Lime);
        }
    }
}

Robot:

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

namespace cAlgo.Robots
{
    [Robot(TimeZone = TimeZones.UTC, AccessRights = AccessRights.None)]
    public class TestData : Robot
    {
        [Parameter(DefaultValue = 0.0)]
        public double Parameter { get; set; }
        private MarketSeries targetSeries;
        
        protected override void OnStart()
        {
            targetSeries = MarketData.GetSeries(TimeFrame.Hour4);
        }

        protected override void OnBar()
        {
            int index = MarketSeries.Close.Count - 1;
            int targetIndex = targetSeries.OpenTime.GetIndexByTime(MarketSeries.OpenTime[index]);

            string text = string.Format("{0}: {1} - {2}: {3}", MarketSeries.OpenTime[index], MarketSeries.Close[index], targetSeries.OpenTime[targetIndex], targetSeries.Close[targetIndex]);
            Print(text);
        }

    }
}

Result: