Bump for the possibility of an answer today.
This is by design on the Group Details page and would also occur on the Node Details page. What I recommend you do is create a new summary page and limit or filter the page by the specific group or nodes you're trying to see. Once you have that page setup how you want it you can then clone/copy the page and setup the new page for another set of nodes or group. Then on the menu bar you can put the links to each group.