When backtesting FreeMargin is ignored

When a bot does a ExecuteMarketOrder and i dont have enough FreeMargin i get an error for insufficient fund, however when backtesting my FreeMargin is ignored and the bot can just keep placing orders as long as my equity doesn't fall below 0.

Heres a simple bot to demonstrate the problem.

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 test : Robot
    {
        [Parameter("Lots", DefaultValue = 1, MinValue = 0.01, Step = 0.01)]
        public double Lots { get; set; }

        public int OrderCounter = 0;

        protected override void OnStart()
        {
        }

        protected override void OnBar()
        {
        }

        protected override void OnTick()
        {
            OrderCounter++;
            ExecuteMarketOrder(TradeType.Buy, Symbol, Symbol.QuantityToVolumeInUnits(Lots), "test", 0, 0);
            Print("{0}: FreeMargin =  {1}   Equity =  {2}   Balance =  {3}   Leverage = {4}    Lots =  {5}", OrderCounter, Account.FreeMargin, Account.Equity, Account.Balance, Account.PreciseLeverage, Lots);
        }

        protected override void OnStop()
        {
            Print("FreeMargin =  {0}   Equity =  {1}   Balance =  {2}    Leverage = {3}   Lots =  {4}", Account.FreeMargin, Account.Equity, Account.Balance, Account.PreciseLeverage, Lots);
        }
    }
}