giu: [bug] Kind a glitch of desktop background from widgets when the main window has a transparent color

package main

import (
	g "github.com/AllenDang/giu"
	"image/color"
)

var (
	foo  string
	foo2 bool
)

func loop() {
	//Render one window
	g.Window("Test window").Layout(
		g.Label("Hello World! I'm a label"),
		g.Selectable("Hello World! I'm a selectable"),
		g.InputText(&foo).Hint("You can enter something here..."),
		g.Checkbox("Check me!", &foo2),
		g.Button("Press me!"),
		g.RadioButton("One lonely radio button!", foo2),

		g.Table().Columns(
			g.TableColumn("Col1"),
			g.TableColumn("Col2"),
			g.TableColumn("Col3"),
		).Rows(
			g.TableRow(
				g.Label("Row1"),
				g.Label("Row1"),
				g.Label("Row1"),
			),
			g.TableRow(
				g.Label("Row2"),
				g.Label("Row2"),
				g.Label("Row2"),
			),
			g.TableRow(
				g.Label("Row3"),
				g.Label("Row3"),
				g.Label("Row3"),
			),
		).Size(400, 200),

		g.Child().Layout(
			g.Checkbox("Checkbox inside a child!", &foo2),
			g.Checkbox("Checkbox inside a child!", &foo2),
			g.Checkbox("Checkbox inside a child!", &foo2),
			g.Checkbox("Checkbox inside a child!", &foo2),
			g.Checkbox("Checkbox inside a child!", &foo2),
			g.Checkbox("Checkbox inside a child!", &foo2),
			g.Checkbox("Checkbox inside a child!", &foo2),
		).Size(200, 100),
	)

	//Render another window
	g.Window("I have no focus").Size(200, 100).Layout(
		g.Checkbox("I'm a checkbox!", &foo2),
	)
}

func main() {
	//Main window (set flag transparent, otherwise transparent color will not work)
	wnd := g.NewMasterWindow("Hello World!", 800, 600, g.MasterWindowFlagsTransparent)

	//Set main window slightly transparent
	wnd.SetBgColor(color.RGBA{A: 175})

	wnd.Run(loop)
}