diff --git src/bp-core/bp-core-template.php src/bp-core/bp-core-template.php
index 3d71621..5280297 100644
--- src/bp-core/bp-core-template.php
+++ src/bp-core/bp-core-template.php
@@ -1294,6 +1294,32 @@ function bp_is_directory() {
 }
 
 /**
+ * Is the directory, the parent of the page being viewed.
+ *
+ * @since BuddyPress (2.1.0).
+ * 
+ * @param  integer $object_id the id to check
+ * @return bool True if the directory is the parent of the page, otherwise
+ *         false.
+ */
+function bp_is_directory_current_parent( $object_id = 0 ) {
+	$retval = false;
+
+	if ( ! is_buddypress() || empty( $object_id ) ) {
+		return $retval;
+	}
+
+	foreach ( buddypress()->pages as $page ) {
+		if ( ! empty( $page->key ) && $object_id == $page->id ) {
+			$retval = true;
+			break;
+		}
+	}
+
+	return (bool) apply_filters( 'bp_is_directory_current_parent', $retval );
+}
+
+/**
  * Check to see if a component's URL should be in the root, not under a member page.
  *
  * - Yes ('groups' is root)    : http://domain.com/groups/the-group
diff --git src/bp-templates/bp-legacy/buddypress-functions.php src/bp-templates/bp-legacy/buddypress-functions.php
index 1e8686c..5eec96a 100644
--- src/bp-templates/bp-legacy/buddypress-functions.php
+++ src/bp-templates/bp-legacy/buddypress-functions.php
@@ -90,6 +90,10 @@ class BP_Legacy extends BP_Theme_Compat {
 		/** Body no-js Class ********************************************************/
 		add_filter( 'body_class', array( $this, 'add_nojs_body_class' ), 20, 1 );
 
+		/** WP Nav Menu & WP List Pages current parent page parent css fix ************/
+		add_filter( 'nav_menu_css_class', array( $this, 'directory_current_parent_page' ), 10, 2 );
+		add_filter( 'page_css_class',     array( $this, 'directory_current_parent_page' ), 10, 2 );
+
 		/** Buttons ***********************************************************/
 
 		if ( ! is_admin() || ( defined( 'DOING_AJAX' ) && DOING_AJAX ) ) {
@@ -381,6 +385,58 @@ class BP_Legacy extends BP_Theme_Compat {
 	}
 
 	/**
+	 * Adds the current_page_parent class to menu item, if needed.
+	 * 
+	 * When viewing a single member/group, this function make sure a current_page_parent class
+	 * is added to the parent directory item/page listed in the WP Nav Menu /WP List Pages 
+	 * 
+	 * @since  BuddyPress (2.1.0)
+	 * @param  array   $classes the list of nav item/page classes
+	 * @param  WP_Post $item    the nav item or page object
+	 * @return array   $classes
+	 */
+	public function directory_current_parent_page( $classes = array(), $item = null ) {
+		// Bail if not displaying a single user or group
+		if ( ! bp_is_user() && ! bp_is_group() ) {
+			return $classes;
+		}
+
+		// Page and nav menu item are post types
+		if ( ! is_a( $item, 'WP_Post' ) ) {
+			return $classes;
+		}
+
+		$object_id = 'ID';
+
+		if ( 'page' != $item->post_type ) {
+			$object_id = 'object_id';
+		}
+
+		// Bail if the object id is not set
+		if ( empty( $item->{$object_id} ) ) {
+			return $classes;
+		}
+
+		// Set the current page parent class
+		$current_page_parent = array( 'current_page_parent' );
+
+		/**
+		 * If a page is set to list blog posts, it will always be the
+		 * default parent. So we need to remove the current page parent
+		 * class.
+		 */
+		if ( ! bp_is_directory_current_parent( $item->{$object_id} ) ) {
+			$classes = array_diff( $classes, $current_page_parent );
+
+		// Make sure the parent directory is the current page parent
+		} else {
+			$classes = array_merge( $classes, $current_page_parent );
+		}
+
+		return $classes;
+	}
+
+	/**
 	 * Load localizations for topic script
 	 *
 	 * These localizations require information that may not be loaded even by init.