QApplication in inPopupMode bug popupWindow is not a widget window will cause a coredump

When a QApplication has both a widget and a QML window while the QML window has a popup window that puts the QApplication in a popupMode, and the mouse enters the widget window, it will cause a crash. At the same time, this popup window cannot obtain keyboard input.

The attached demo has a red QML window with a lightblue popupWindow on it. There is also a blank widget window. When both are displayed, moving the mouse over the blank widget window will cause a crash.