I recently noticed an issue with the rendering of ComboBox controls when they are hosted in WPF XBAP applications. The nature of this issue is such that it will probably (hopefully?) not cause anyone any problems. As the screen-shot below shows, when a ComboBox has a RotateTransform applied to it (as either a RenderTransform or LayoutTransform) the "drop down" part of the combo is not rotated. For comparison I've included a regular WPF ListBox which is also rotated.
In contrast the same Xaml code hosted in XamlPad does not have this same "issue".
