_RunModalLoop doesn't break about windigo HOT 4 CLOSED

package main

import (
	"runtime"
)

func main() {
	runtime.LockOSThread()

	mainWindow := NewWndMain()
	mainWindow.Run()
}

package main

import (
	"github.com/rodrigocfd/windigo/ui"
	"github.com/rodrigocfd/windigo/win"
)

// WndMain is the main application window.
type WndMain struct {
	wnd     ui.WindowMain
	btnOpen ui.Button
}

// WndMain constructor.
func NewWndMain() *WndMain {
	wnd := ui.NewWindowMain(
		ui.WindowMainOpts().
			Title("Test").
			ClientArea(win.SIZE{Cx: 800, Cy: 600}),
	)

	mainWindow := &WndMain{
		wnd: wnd,
		btnOpen: ui.NewButton(
			wnd,
			ui.ButtonOpts().
				Position(win.POINT{X: 10, Y: 10}).
				Size(win.SIZE{Cx: 300, Cy: 300}).
				Text("Open Modal"),
		),
	}

	mainWindow.events()
	return mainWindow
}

// WndMain will run.
func (me *WndMain) Run() {
	me.wnd.RunAsMain()
}

// WndMain events are attached here.
func (me *WndMain) events() {
	me.btnOpen.On().BnClicked(func() {
		modal := NewWndModal()
		modal.Show(me.wnd)
	})
}

package main

import (
	"github.com/rodrigocfd/windigo/ui"
	"github.com/rodrigocfd/windigo/win"
	"github.com/rodrigocfd/windigo/win/co"
)

// WndModal is the modal window, opened by WndMain.
type WndModal struct {
	wnd      ui.WindowModal
	btnClose ui.Button
	edit     ui.Edit
}

// WndModal constructor.
func NewWndModal() *WndModal {
	wnd := ui.NewWindowModal(
		ui.WindowModalOpts().
			Title("Modal").
			ClientArea(win.SIZE{Cx: 300, Cy: 300}),
	)

	modalWindow := &WndModal{
		wnd: wnd,
		btnClose: ui.NewButton(
			wnd,
			ui.ButtonOpts().
				Position(win.POINT{X: 10, Y: 10}).
				Size(win.SIZE{Cx: 100, Cy: 30}).
				Text("Close"),
		),
		edit: ui.NewEdit(
			wnd,
			ui.EditOpts().
				Position(win.POINT{X: 10, Y: 50}).
				Size(win.SIZE{Cx: 280, Cy: 20}).
				Text("Hello, world!"),
		),
	}

	modalWindow.events()
	return modalWindow
}

// WndModal will be shown; blocks until the modal is closed.
func (me *WndModal) Show(parent ui.AnyParent) {
	me.wnd.ShowModal(parent)
}

// WndModal events are attached here.
func (me *WndModal) events() {
	me.btnClose.On().BnClicked(func() {
		me.wnd.Hwnd().SendMessage(co.WM_CLOSE, 0, 0)
	})
}

// WndMain events are attached here.
func (me *WndMain) events() {
	me.btnOpen.On().BnClicked(func() {
		modal := NewWndModal()
		modal.Show(me.wnd)
		me.wnd.Hwnd().MessageBox("Modal closed.", "Test", co.MB_ICONINFORMATION)
	})
}