Ticket #3637: fix.patch

src/includes/forums/functions.php

@@ -1611 +1611 @@
                 // Loop through children and add together forum reply counts
                 $children = bbp_forum_query_subforum_ids( $forum_id );
                 if ( ! empty( $children ) ) {
+                        
+                        // We want to record the last active time.
+                        $latest_last_active = PHP_INT_MIN;
+                        
                         foreach ( $children as $child ) {
-                                $children_last_topic = bbp_update_forum_last_topic_id( $child ); // Recursive
+                                $child_last_topic = bbp_update_forum_last_topic_id( $child ); // Recursive.
+                                
+                                // If the response is invalid.
+                                if(!empty($child_last_topic)) {
+                                        // We need to get the last active time, because we need to compare them.
+                                        $child_last_active = bbp_get_topic_last_active_time($child_last_topic);
+                                        
+                                        // Update the last topic only if it is later.
+                                        if($child_last_active > $latest_last_active) {
+                                                $latest_last_active = $child_last_active;
+                                                $children_last_topic = $child_last_topic;
+                                        }
+                                }
                         }
                 }