You didn't notice the additional shadow underneath the car? That's the ambient shadow he's talking about. The shadows are also very slightly sharper, which is ironically why the aliasing is a tiny bit more noticeable now.
The point is that this is not a bug. A bug is an unintended error in the behaviour of a program. (like the previous shadow errors on Crossfire cards) This "problem" is very much intended as evidenced by the comment you quoted and the fact that it's been like that forever, thus not a bug.
Add to that the fact that it's an unbelievably minor detail, and you get my comment above. But by all means, keep on posting screenshots.