diff --git a/src/Components/ElementsSidebar/ElementsSidebar.tsx b/src/Components/ElementsSidebar/ElementsSidebar.tsx
index b710ae3..9f8bcc9 100644
--- a/src/Components/ElementsSidebar/ElementsSidebar.tsx
+++ b/src/Components/ElementsSidebar/ElementsSidebar.tsx
@@ -26,7 +26,8 @@ export class ElementsSidebar extends React.Component<IElementsSidebarProps> {
 
       handleContainer(container);
 
-      container.props.children.forEach((child) => {
+      // if this reverse() gets costly, replace it by a simple for
+      container.props.children.reverse().forEach((child) => {
         if (visited.has(child)) {
           return;
         }