Yep, it's doing the same here.
http://imageshack.us/photo/my-images...0509at181.png/
http://imageshack.us/photo/my-images...0509at181.png/
I have to admit in all my 11 years of Tooling I've never once "trimmed" a region to the right in shuffle mode. Thanks to your example I'm not going to start any time soon either.