BuddyPress.org

i’m getting some weird when forums is displayed is within the groups.
pl see the link below :

http://www.nammavidyaranyapura.org/groups/civic-issues-719392211/forum/.

But same thing doesn’t happen if i define site wide forums through normal bbpress
and access the same through normal menus, see below :

http://www.nammavidyaranyapura.org/citizensforum/

i’m using shortcode in my page to display the forum.

Can you please help me in resolving this weird forum display format within groups?