During the process of writing our Silverlight 2 game “Tunnel Trouble” we stumbled upon a fairly significant rendering defect in the Beta 1 version of the Silverlight 2 plugin. This defect appears to affect any UIElement (Rectangles, Paths, Images) that has been transformed on its X or Y coordinate. If the object breaks the bounds of the plugin, Silverlight chooses not to render the object that has been flipped or rotated.

Note: There appears to be an inconsistent workaround. If you set the width and height of the <object> tag to a fixed size (i.e. 250×205) and not 100%x100% the defect appears to resolve itself.

Code: RenderDefect.zip