MarketClose-order-with-non-zero-limit-price

Hello,

While a "Market" order correctly ignores any non-zero limit price, but it seems that a "MarketClose" order with a non-zero limit price can generate ghost trades. Please see the code and the snippet below:

CODE:
using WealthLab.Backtest;
using System;
using WealthLab.Core;
using WealthLab.Indicators;
using WealthLab.ChartWPF;
using System.Drawing;
using System.Collections.Generic;

namespace WealthScript27 
{
   public class MyStrategy : UserStrategyBase
   {
      //create indicators and other objects here, this is executed prior to the main trading loop
      public override void Initialize(BarHistory bars)
      {
         rsi = new RSI(bars.Close, 14);
         PlotIndicator(rsi);
      }

      //execute the strategy rules here, this is executed once for each bar in the backtest history
      public override void Execute(BarHistory bars, int idx)
      {
         if (!HasOpenPosition(bars, PositionType.Long))   
         {
            if (rsi[idx] < 30)
               PlaceTrade(bars, TransactionType.Buy, OrderType.Market);
         }
         else
         {
            Position p = LastPosition;
            //exit after 3 days
            if (idx + 1 - p.EntryBar >= 3)
               PlaceTrade(bars, TransactionType.Sell, OrderType.MarketClose, p.EntryPrice + 0.1);
         }
      }

      //declare private variables below
      private RSI rsi;

   }
}