diff --git a/packages/react/CHANGELOG.md b/packages/react/CHANGELOG.md
index 8b366ce1..6931ea5b 100644
--- a/packages/react/CHANGELOG.md
+++ b/packages/react/CHANGELOG.md
@@ -9,6 +9,7 @@
 - do not use fallback handle if a specific id is being used
 - fix `defaultEdgeOptions` markers not being applied
 - fix `getNodesBounds` and add second param for passing options
+- fix `expandParent` for child nodes
 
 ## 12.0.0-next.7
 
diff --git a/packages/react/src/utils/changes.ts b/packages/react/src/utils/changes.ts
index 6bcddabd..310b784c 100644
--- a/packages/react/src/utils/changes.ts
+++ b/packages/react/src/utils/changes.ts
@@ -6,10 +6,7 @@ export function handleParentExpand(updatedElements: any[], updateItem: any) {
   for (const [index, item] of updatedElements.entries()) {
     if (item.id === updateItem.parentNode) {
       const parent = { ...item };
-
-      if (!parent.computed) {
-        parent.computed = {};
-      }
+      parent.computed ??= {};
 
       const extendWidth = updateItem.position.x + updateItem.computed.width - parent.computed.width;
       const extendHeight = updateItem.position.y + updateItem.computed.height - parent.computed.height;
@@ -106,7 +103,7 @@ function applyChanges(changes: any[], elements: any[]): any[] {
     const updatedElement = { ...element };
 
     for (const change of changes) {
-      applyChange(change, updatedElement, elements);
+      applyChange(change, updatedElement, updatedElements);
     }
 
     updatedElements.push(updatedElement);