How can I get continuous perfect images using screenshots

[wjuuuuuu]

What versions are you running?

$ go list -m github.com/chromedp/chromedp
github.com/chromedp/chromedp v0.9.5

$ google-chrome --version

$ go version
go version go1.21.3 windows/amd64


#### What did you do? Include clear steps.
1. Put specific URL  with specific tag 
2. Run Do screen-shot function

func main() {
ctx, cancel := chromedp.NewExecAllocator(context.Background(),
append(chromedp.DefaultExecAllocatorOptions[:],
chromedp.Flag("blink-settings", "imagesEnabled=true"),
chromedp.WindowSize(1920, 200000),
))
defer cancel()
ctx, cancel = chromedp.NewContext(ctx, chromedp.WithDebugf(log.Printf))
defer cancel()

var wg sync.WaitGroup
wg.Add(1)
lctx, cancel := context.WithCancel(ctx)
defer cancel()
chromedp.ListenTarget(lctx, func(ev interface{}) {
	if ev, ok := ev.(*page.EventLifecycleEvent); ok {
		if ev.Name == "InteractiveTime" {
			wg.Done()
			cancel()
		}
	}
})

var overview []*cdp.Node
var nodes []*cdp.Node
err := chromedp.Run(ctx,
	chromedp.Navigate("https://www.lge.co.kr/home-audio/tone-ut90s-black"),
	chromedp.EmulateViewport(800, 200000),
	chromedp.ActionFunc(func(ctx context.Context) error {
		pCtx, cancel := context.WithTimeout(ctx, 5*time.Second)
		defer cancel()
		if err := chromedp.Click("body div.ins-popup-with-image-close-button", chromedp.BySearch).Do(pCtx); err != nil {
			log.Printf("Click Err:%s", err)
		}
		cancel()
		return nil
	}),
	chromedp.Nodes(`overview`, &overview, chromedp.ByID, chromedp.Populate(3, true, chromedp.PopulateWait(1*time.Second))),
	chromedp.Evaluate("let node = document.querySelector('div.floating-chatbot'); node.parentNode.removeChild(node)", nil),
	chromedp.Evaluate("let node2 = document.querySelector('div.floating-wrap'); node2.parentNode.removeChild(node2)", nil),
	chromedp.EmulateViewport(800, 1000),
	chromedp.ActionFunc(func(ctx context.Context) error {
		wg.Wait()

		if len(overview) != 0 && overview[0].ChildNodeCount > 0 {
			if err := chromedp.Nodes(`div.iw_placeholder`, &nodes, chromedp.FromNode(overview[0]), chromedp.Populate(-1, true, chromedp.PopulateWait(1*time.Second))).Do(ctx); err != nil {
				log.Printf("Node ERR:%s", err)
			}
		}
		if err := chromedp.Sleep(3 * time.Second).Do(ctx); err != nil {
			log.Printf("Sleep Error:%s", err)
		}
		for i, node := range nodes[0].Children {

			nodeIdValue := node.AttributeValue("id")
			if err := chromedp.ScrollIntoView(nodeIdValue, chromedp.ByID).Do(ctx); err != nil {
				log.Printf("Scroll Error:%s", err)
			}
			modifyClass(ctx, node)
			if err := chromedp.Sleep(3 * time.Second).Do(ctx); err != nil {
				log.Printf("Sleep Error:%s", err)
			}
			var buf []byte
			if err := chromedp.Screenshot(nodeIdValue, &buf, chromedp.ByID).Do(ctx); err != nil {
				log.Printf("Screenshot ERROR:%s", err)
			}

			strI := strconv.Itoa(i)
			filename := "test2_" + strI + ".png"
			if err := os.WriteFile(filename, buf, 0o644); err != nil {
				log.Fatal(err)
			}

		}

		return nil
	}),
)
if err != nil {
	log.Fatal(err)
}

}

#### What did you expect to see?
1. Get Perfect continuous Images 

#### What did you see instead?
1. Got images which offered by tag with extra spaces 
2. Got images with a disappeared image