On our 2004, it happened for me like clockwork. Yet when one of the dealership folks tried exactly what I asked them to do, it barely wobbled. The first dealership person on the bike was a tiny little dude. After a second visit, they had someone with a little more, well, mass try the same test, and the same bike wobbled exactly like I said it would. So it certainly may be load-dependent; and I'd imagine that would affect how much weight is toward the back of the bike when your arms are off the bars and you're leaning back.
So CB, if it doesn't wobble at all for you, take that as a personal compliment as well as your bike's.