QPrintPreviewWidget subclass crash on windows

When subclassing QPrintPreviewWidget the application crashes if the user

• selects the printer 'Microsoft XPS Document Writer'
• clicks the Print button
• and then clicks the Cancel button on the file dialog to choose the XPS file name

The attached file Test.zip contains a minimal example application which triggers the error (in my environment at least).
The application works correctly if compiled with Qt 5.4.