dynamic stylesheet refresh fails for combobox's abstractitemview

According to the documentation, I should be able to use unpolish/polish to trigger a stylesheet refresh that will update the style of the widget to reflect dynamic properties which are referenced in the stylesheet.

However, the following code demonstrates that this is not entirely true. First I set the object name to "fancy". Now, neither polish/unpolish nor setStyle reflect the new style. Finally, when I use setStyleSheet then it is reflected.

Please see attachment for code sample.