Problems while positioning Qt Quick Window at negative values

I cannot position the window at negative values for x and y programmatically. I need the window to be partially hidden during creation. For instance:

import QtQuick 2.15
import QtQuick.Window 2.15

Window {
visible: true
  x:-100
  y:-100
  width: 640
  height: 480
  title: qsTr("Hello World")
}