Ticket #2768: 2768.02b.patch

bp-activity/bp-activity-classes.php

@@ -1013 +1013 @@
                                 $parent_id = $r->secondary_item_id;
                                 while ( $parent_id !== $r->item_id ) {
                                         $depth++;
-                                        $parent_id = $ref[ $parent_id ]->secondary_item_id;
+
+                                        if ( empty( $ref[ $parent_id ] ) ) {
+                                                $parent_id = $r->item_id;
+                                        } else {
+                                                $parent_id = $ref[ $parent_id ]->secondary_item_id;
+                                        }
                                 }
                                 $r->depth = $depth;
                         }