Topic on Private Group shows on search

I have established a Category that contains hidden forums, accessible only to Private Groups.  Registered members who are not in the Private Group are not even aware of the existence of certain forums (as it should be).  However, if a Registered Member (not in the Private Group) does a UserName search for a member of a Private Group, the Topic Names for ALL posts (Private Group forum posts and regular posts) are listed in the search results.

I am running version 7.6.  Has this "hole" been addressed in 7.7?  If not, do you have any suggestions for resolution?

-boRg-,  You mentioned there may be a mod for this.  Would I find the details on the forum - can you provide the Topic Title, a link to that thread, or suggestions on what code to change.

My concern with Private Group topic titles being available for search is the confidentially that is risked with the Title of private forum topics being viewed by non Private Group members.