diff --git a/react-components/src/components/CadModelContainer/useApplyCadModelStyling.tsx b/react-components/src/components/CadModelContainer/useApplyCadModelStyling.tsx
index 0392ea81226..752ceefbf0f 100644
--- a/react-components/src/components/CadModelContainer/useApplyCadModelStyling.tsx
+++ b/react-components/src/components/CadModelContainer/useApplyCadModelStyling.tsx
@@ -132,7 +132,7 @@ function isEqualTreeIndex(
   collectionB: TreeIndexNodeCollection
 ): boolean {
   const isEqualContent =
-    collectionA.getIndexSet().differenceWith(collectionB.getIndexSet()).count === 0;
+    collectionA.getIndexSet().clone().differenceWith(collectionB.getIndexSet()).count === 0;
   return isEqualContent;
 }