Is this sample image a Non-Camera Parallel view? They DO work correctly for Non-Camera Parallel only based on my test.
The problem is, the dimensions DO NOT render correctly the following views:
- Non-Camera Perspective view
- Camera Parallel view
- Camera Perspective view
Have you tested rendering dimensions in the three views above?
You are correct, this doesn't work very well in any view (camera or SW Standard views) that have perspective on. You will want to use it in views without perspective.