I think this is a change in 1.9.
I'm used to and expect groups to behave the way the documentation says: If you click on any of it it will select the group, and you can option-click or double click to select internal elements. This DOES work normally with 1.9. However, when I switch to Outline Mode, it seems to stop working - clicking inside a group just selects the single element.
Steps to reproduce: New document, make two squares, group them, clear selection, click on one (group is selected). Go into outline mode, clear the selection, and click on a square. (Just the single square is selected) Leave outline mode, and things go back to working normally.
This is neither the behavior I expect nor want, so I think it is bug.