Scenario  1: On Laptop, connect screen when running:
===================================================

5.4.0
.....
Widget::dump>#0 widget geom:QRect(640,276 640x480)
QDesktopWidget
 *#0 QRect(0,0 1920x1080)
QScreen
 *0 0x212de40 "\\.\DISPLAY1" QRect(0,0 1920x1080)

Widget::dump<

### Note: New monitor is at 0,0 (!), old laptop screen is moved to 1920,0

Widget::screenAdded 0x28f38f0   "\\.\DISPLAY3"   QRect(0,0 1920x1200) 

### Note: Window is moved from y 276->303, logic in
### QWindowsWindow::handleGeometryChange detects new screen and updates
### accordingly:
QWindowsWindow::handleGeometryChange QRect(640,276 640x480) QRect(640,303 640x480)
"WidgetClassWindow" QMoveEvent(QPoint(640,303))
"" QMoveEvent(QPoint(640,303))
ScreenChangeInternal "" QEvent(ScreenChangeInternal, 0x2eb4f8, type = 216)
Widget::screenChanged 0x28f38f0   "\\.\DISPLAY3"   QRect(0,0 1920x1200) 

Widget::dump>#1 widget geom:QRect(640,303 640x480)
QDesktopWidget
  #0 QRect(1920,0 1920x1080)
 *#1 QRect(0,0 1920x1200)
QScreen
  0 0x212de40 "\\.\DISPLAY1" QRect(1920,0 1920x1080)
 *1 0x28f38f0 "\\.\DISPLAY3" QRect(0,0 1920x1200)
 
### Note: ^^^ QScreen & QDesktopWidget in sync.

Widget::dump<

Scenario 2: On Laptop, hibernate, connect screen, resume:
========================================================

5.4.0

Widget::dump>#0 widget geom:QRect(640,276 640x480)
QDesktopWidget
 *#0 QRect(0,0 1920x1080)
QScreen
 *0 0x221de40 "\\.\DISPLAY1" QRect(0,0 1920x1080)
Widget::dump<

### Note: Move is received BEFORE screenAdded, so,
### QWindowsWindow::handleGeometryChange is unable to
### detect the screen change:

"WidgetClassWindow" QMoveEvent(QPoint(640,303))
"" QMoveEvent(QPoint(640,303))

Widget::screenAdded 0x27135d0   "\\.\DISPLAY3"   QRect(0,0 1920x1200)
Widget::dump>#1 widget geom:QRect(640,303 640x480)
QDesktopWidget
  #0 QRect(1920,0 1920x1080)
 *#1 QRect(0,0 1920x1200)
QScreen
 *0 0x221de40 "\\.\DISPLAY1" QRect(1920,0 1920x1080)
  1 0x27135d0 "\\.\DISPLAY3" QRect(0,0 1920x1200)
Widget::dump<

Widget::dump>#2 widget geom:QRect(640,303 640x480)
QDesktopWidget
  #0 QRect(1920,0 1920x1080)
 *#1 QRect(0,0 1920x1200)
QScreen
 *0 0x221de40 "\\.\DISPLAY1" QRect(1920,0 1920x1080)
  1 0x27135d0 "\\.\DISPLAY3" QRect(0,0 1920x1200)  
### Note: ^^^ QScreen & QDesktopWidget OUT OF SYNC.

Widget::dump<