diff --git a/org.eclipse.tm4e.core/src/main/java/org/eclipse/tm4e/core/internal/utils/ObjectCloner.java b/org.eclipse.tm4e.core/src/main/java/org/eclipse/tm4e/core/internal/utils/ObjectCloner.java
index 8a7a9d67..92463101 100644
--- a/org.eclipse.tm4e.core/src/main/java/org/eclipse/tm4e/core/internal/utils/ObjectCloner.java
+++ b/org.eclipse.tm4e.core/src/main/java/org/eclipse/tm4e/core/internal/utils/ObjectCloner.java
@@ -79,7 +79,7 @@ public final class ObjectCloner {
 
 		final var shallowClone = shallowClone(obj, () -> obj);
 		clones.put(obj, shallowClone);
-		return obj;
+		return shallowClone;
 	}
 
 	private static @Nullable <@Nullable T> T deepCloneNullable(final T obj, final Map<Object, @Nullable Object> clones) {