Fix visible items in category boxes

ref https://www.woltlab.com/community/thread/303963-men%C3%BC-filebase-sidebar-auflistung-der-kategorien/

diff --git a/wcfsetup/install/files/lib/data/category/CategoryNode.class.php b/wcfsetup/install/files/lib/data/category/CategoryNode.class.php
index 011cc5d61b3cbb2f89374fcf0919d3bdd99c5c1e..aa6eb22ff9a4fce00a09d0bb7619dded6f9fbe9c 100644 (file)
--- a/wcfsetup/install/files/lib/data/category/CategoryNode.class.php
+++ b/wcfsetup/install/files/lib/data/category/CategoryNode.class.php
@@ -59,6 +59,13 @@ class CategoryNode extends DatabaseObjectDecorator implements IObjectTreeNode
                 // is a direct child element of the active category
                 return true;
             }
+
+            foreach ($activeCategory->getParentCategories() as $parentCategory) {
+                if ($this->getParentCategory()->categoryID == $parentCategory->categoryID) {
+                    // This is a child element of a parent category of the active category.
+                    return true;
+                }
+            }
         }
 
         return false;