QGraphicsView: QGraphicsTextItem added to a QGraphicsRectItem with a cosmetic pen causes the right hand edge to disappear

A QGraphicsView/Scene are created and to it, a number of items. One item is a subclass of QGraphicsRectItem and to this, a QGraphicsTextItem with the rect item as parent. A cosmetic pen is set to draw a black outline around the rect item. The right-hand edge of this rect disappears when the text item is added.

Example now attached.

To reproduce using the attached example, click on Test->Test One.

You should see that the large rectangle that encloses the text item has its right hand edge missing.