diff --git a/src/Umbraco.Web.UI.Client/src/packages/core/repository/repository-items.manager.ts b/src/Umbraco.Web.UI.Client/src/packages/core/repository/repository-items.manager.ts
index 9404b5d54a48..cb5dc78cd359 100644
--- a/src/Umbraco.Web.UI.Client/src/packages/core/repository/repository-items.manager.ts
+++ b/src/Umbraco.Web.UI.Client/src/packages/core/repository/repository-items.manager.ts
@@ -213,7 +213,7 @@ export class UmbRepositoryItemsManager<ItemType extends { unique: string }> exte
 			this.observe(
 				asObservable(),
 				(data) => {
-					this.#items.append(this.#sortByUniques(data));
+					this.#items.setValue(this.#sortByUniques(data));
 				},
 				ObserveRepositoryAlias,
 			);