Why is my rendering messy？

this is my code.
```go
func main() {
var path string
flag.StringVar(&path, "p", "D:\\test", "路径，默认为当前路径")
flag.Parse()

if err := ui.Init(); err != nil {
log.Fatalf("failed to initialize termui: %v", err)
}
defer ui.Close()

//
p := widgets.NewParagraph()
p.Title = "Atom Parsing"
p.Text = " starting..."
p.SetRect(0, 0, 50, 3)
p.TextStyle.Fg = ui.ColorWhite
p.BorderStyle.Fg = ui.ColorGreen
p.TitleStyle.Fg = ui.ColorGreen

//
g1 := widgets.NewGauge()
g1.Title = "进度"
g1.Percent = 0
g1.SetRect(50, 0, 100, 3)
g1.BarColor = ui.ColorGreen
g1.LabelStyle = ui.NewStyle(ui.ColorYellow)
g1.TitleStyle.Fg = ui.ColorMagenta
g1.BorderStyle.Fg = ui.ColorYellow

//
l := widgets.NewList()
listData := make([]string, 0, 10)
l.Title = "Error"
l.TitleStyle.Fg = ui.ColorRed
l.Rows = listData
l.SetRect(0, 4, 100, 10)
l.TextStyle.Fg = ui.ColorBlue
l.BorderStyle.Fg = ui.ColorWhite

draw := func() {
ui.Render(p, g1, l)
}
draw()

time.Sleep(1 * time.Second)
//
go func() {
for {
select {
case d := <-terminal.GaugeChan:
g1.Percent = d
case text := <-terminal.TitleChan:
p.Text = text
case s, ok := <-terminal.ProblemChan:
if ok {
listData = append(listData, fmt.Sprintf(" [%d] %s", len(listData), s))
l.Rows = listData
}
}
}
}()

//
go func() {
err1 := parsing.XmlParsing(path)
if err1 != nil {
log.Fatal(err1)
}
}()

uiEvents := ui.PollEvents()
ticker := time.NewTicker(100 * time.Millisecond).C
for {
select {
case e := <-uiEvents:
switch e.ID {
case "q", "":
return
}
case <-ticker:
draw()
}
}
}
```

No repository file or test is named. Start by running the shown Go program with the displayed terminal layout and inspect the paragraph, gauge, and list rendering around their SetRect and style configuration; the issue needs a reproducible mismatch and expected rendering before completion can be judged.

Written by the indexing model from the issue text.