Problem with timing position opening

Hello PRC Forum

I have the following problem: my indicator signals me an entry point, but during the backtest the position is opened one bar later. Engulfing requires the evaluation of the 2 past candles, why is no position opened on the 3rd candle but on the 4th candle?

Indicator:

SecondToLastCandleHeight = abs(close[2]-open[2])
LastCandleHeight = abs(close[1]-open[1])

Engulfing = LastCandleHeight > SecondToLastCandleHeight

ShortMarketCondition = DIminus[14](CLOSE[1]) > DIplus[14](CLOSE[1]) AND ADX[14] > 12 AND ADX[14] >= ADX[14][2]
LongMarketCondition = DIplus[14](CLOSE[1]) > DIminus[14](CLOSE[1]) AND ADX[14] > 12 AND ADX[14] >= ADX[14][2]

EngulfingShort = Engulfing AND CLOSE[2] > OPEN[2] AND CLOSE[1] < OPEN[2] AND ShortMarketCondition
IF EngulfingShort THEN
DRAWARROWDOWN(barindex,close) coloured(255,255,0)
ENDIF

EngulfingLong = Engulfing AND CLOSE[2] < OPEN[2] AND CLOSE[1] > OPEN[2] AND LongMarketCondition
IF EngulfingLong THEN
DRAWARROWUP(barindex,close) coloured(0,255,255)
ENDIF

RETURN EngulfingShort as "EngulfingShort", EngulfingLong as "EngulfingLong", LastCandleHeight as "LastCandleHeight", SecondToLastCandleHeight as "SecondToLastCandleHeight"

Strategy:

//Engulfing/DMI
//MainTime: 1H, SubordinateTime: 5M
//Cornel Schmid, 03.09.2022

//TERMS AND CONDITIONS
DEFPARAM PreLoadBars = 300
DEFPARAM CumulateOrders = true
Position=1

//ENGULFING
EngulfingShort, EngulfingLong, LastCandleHeight, SecondToLastCandleHeight = CALL "FR_Engulfing_DMI"

//ENGULFINGRATIO
EngulfingRatio = (LastCandleHeight/SecondToLastCandleHeight) < MaxRatio

//EXECUTION
IF Engulfingshort THEN
SELLSHORT Position PERPOINT AT MARKET
SET STOP PLOSS StopLossShort
ENDIF

IF EngulfingLong THEN
BUY Position PERPOINT AT MARKET
SET STOP PLOSS StopLossLong
ENDIF

[REM Trailing Stop, Exitconditions, etc....]

I have added a picture: Yellow and turquoise arrows = Indicator, Green and red arrows = Strategy

What is the problem?

EngulfingStrat_Picture.png