Activity Stream - Display activity from private groups only when member of group.

Hello,

I'm trying to display an activity stream that also contains posts from Private/Hidden Groups. I'm using the following code to generate the stream:

bp_has_activities( 'show_hidden=true')

I'm now displaying activity from Private/Hidden Groups.

The issue is that Private/Hidden Groups activity is being displayed even though the specific user is NOT a member of the Private/Hidden Group. Shouldn't the user need to be a member of the Private/Hidden Group in order for activity to be displayed?

thanks