CVD指标绘图异常：背离信号延迟显示问题求助

我正在编写一款可识别背离并在图表上绘制信号的Cumulative Volume Delta（CVD）指标，基于已有CVD代码，并借鉴了TradingView官方RSI背离指标的代码片段。

以下是完整代码：

//@version=5
indicator(title = "Cumulative Volume Delta", shorttitle = "CVD", overlay = false, format = format.volume, precision = 1, timeframe = "", timeframe_gaps = true)
lbR = input(title="Pivot Lookback Right", defval=14, tooltip = "For bearish Div")
lbL = input(title="Pivot Lookback Left", defval=14, tooltip = "For bullish Div")

// Calculate true range (tw), body width (bw), and body (body)
tw = high - math.max(open, close)
bw = math.min(open, close) - low
body = math.abs(close - open)

// Function to calculate rate based on a condition (cond)
_rate(cond) =>
    ret = 0.5 * (tw + bw + (cond ? 2 * body : 0)) / (tw + bw + body)
    ret := nz(ret) == 0 ? 0.5 : ret
    ret

// Calculate delta for up and down movements
deltaup = volume * _rate(open <= close)
deltadown = volume * _rate(open > close)
delta = close >= open ? deltaup : -deltadown

// Calculate cumulative delta
cumdelta = ta.cum(delta)

plFound = na(ta.pivotlow(cumdelta, lbL, lbR)) ? false : true
phFound = na(ta.pivothigh(cumdelta, lbL, lbR)) ? false : true

// Regular Bullish
// Osc: Higher Low
cvdHL = cumdelta[lbR] > ta.valuewhen(plFound, cumdelta[lbR], 1)

// Price: Lower Low
priceLL = low[lbR] < ta.valuewhen(plFound, low[lbR], 1) 
bullCond = plFound and cvdHL and priceLL


plot(plFound ? cumdelta[lbR] : na, offset = -lbR, title="Regular Bullish", linewidth=2, color=(bullCond ? color.green : na)) 
plotshape(bullCond ? cumdelta[lbR] : na,offset = -lbR, title="Regular Bullish Label", text=" Bull ", style=shape.labelup, location=location.absolute, color=color.green, textcolor=color.white)
 

// Regular Bearish
// Osc: Lower High
cvdLH = cumdelta[lbR] < ta.valuewhen(phFound, cumdelta[lbR], 1)

// Price: Higher High
priceHH = high[lbR] > ta.valuewhen(phFound, high[lbR], 1)
bearCond = phFound and cvdLH and priceHH

plot(phFound ? cumdelta[lbR] : na, offset = -lbR, title="Regular Bearish",linewidth=2,color=(bearCond ? color.red : na))
plotshape(bearCond ? cumdelta[lbR] : na,offset = -lbR,title="Regular Bearish Label",text=" Bear ",style=shape.labeldown,location=location.absolute,color=color.red,textcolor=color.white) 
 
plot(cumdelta) 

plotchar(bullCond ? cumdelta[lbR] : na, offset = -lbR, "CVDBull", "4", location.bottom, color = color.rgb(0, 255, 21), size = size.small)
plotchar(bearCond ? cumdelta[lbR] : na, offset = -lbR, "CVDBear", "8", location.top, color = color.rgb(255, 0, 0), size = size.small) 

调试时发现问题：看涨/看跌条件的绘图逻辑正确，但引擎会延迟x根K线才识别到信号。我是编程新手，怀疑问题出在offset设置上，尝试调整为+lbR、-lbR等参数均无效，恳请技术帮助。

内容的提问来源于stack exchange，提问作者Oraz94