[Interest] Default QWizard background image missing?

[Stephen Chu]

I am working on my first QWizard app and find that on Mac, the page: 
http://qt-project.org/doc/qt-4.8/qwizard.html states: "The watermark, 
banner, and logo pixmaps are ignored by the MacStyle. If the 
BackgroundPixmap is set, it is used as the background for the wizard; 
otherwise, a default "assistant" image is used."

However, it's missing on my wizard built with both 4.8.2 and 5.0: 
http://i.imgur.com/pENFl.png

Is this a know issue or the doc is incorrect?