andlabs/ui combobox not rendering in a tab on windows

main.go

package main

import (
	"fmt"
	"github.com/andlabs/ui"
	_ "github.com/andlabs/ui/winmanifest"
)

func makePage1() ui.Control {
	return ui.NewLabel("Page 1")
}

func makePage2() ui.Control {
	vb := ui.NewVerticalBox()
	vb.SetPadded(true)

	vb.Append(ui.NewLabel("Choose"), false)

	strings := make([]string, 300)
	for i := 0; i < len(strings); i++ {
		strings[i] = fmt.Sprintf("This is a string to choose %d", i)
	}
	cbox := ui.NewCombobox()
	for _, entry := range strings {
		cbox.Append(entry)
	}
	vb.Append(cbox, false)

	return vb
}

func setupUI() {
	win := ui.NewWindow("Test", 800, 600, true)
	win.OnClosing(func(*ui.Window) bool {
		ui.Quit()
		return true
	})
	ui.OnShouldQuit(func() bool {
		win.Destroy()
		return true
	})

	tabCtrl := ui.NewTab()
	win.SetChild(tabCtrl)
	win.SetMargined(true)

	tabCtrl.Append("Tab 1", makePage1())
	tabCtrl.SetMargined(0, true)

	tabCtrl.Append("Tab 2", makePage2())
	tabCtrl.SetMargined(1, true)

	win.Show()
}

func main() {
	ui.Main(setupUI)
}