vtkCornerAnnotation renders empty strings as rectangles when background isn't transparent
This issue was created automatically from an original Mantis Issue. Further discussion may take place here.
When a vtkCornerAnnotation's text property's background isn't transparent, e.g.:
cornerAnnotation->GetTextProperty()->SetBackgroundColor(1.0, 0.0, 1.0); cornerAnnotation->GetTextProperty()->SetBackgroundOpacity(1.0);
then any empty strings are rendered as small rectangles.
The attached example demonstrates the problem.