Qt Creator does not repaint itself after mac book is open from sleep state.

When  macbook pro connected to two identical external monitors and macbook lid Closed, (exteranl keyboard and trackpad attached)
When Macbook lid is opened Qt Creator does not repaint itself, to correct it  you need to full screen button so that it redraws correctly

To reproduce:

Connect two external monitor, 

Have Qt Creator maximized

Closed the Macbook pro lid/screen

 Open the lid of the macbook pro:  Qt creator to go almost blank. Moving the mouse over certain areas re-paints those areas only. Dragging the window to the other monitor does indeed redraw the entire window.

If we remove the second external monitor and have only one external monitor there is no problem.