diff --git a/packages/editor-ui/src/composables/useDataSchema.test.ts b/packages/editor-ui/src/composables/useDataSchema.test.ts
index 212f767675..b98290e135 100644
--- a/packages/editor-ui/src/composables/useDataSchema.test.ts
+++ b/packages/editor-ui/src/composables/useDataSchema.test.ts
@@ -684,4 +684,27 @@ describe('useFlattenSchema', () => {
 			}).length,
 		).toBe(3);
 	});
+
+	it('items ids should be unique', () => {
+		const { flattenSchema } = useFlattenSchema();
+		const schema: Schema = {
+			path: '',
+			type: 'object',
+			value: [
+				{
+					key: 'index',
+					type: 'number',
+					value: '0',
+					path: '.index',
+				},
+			],
+		};
+		const node1 = { name: 'First Node', type: 'any' };
+		const node2 = { name: 'Second Node', type: 'any' };
+
+		const node1Schema = flattenSchema({ schema, node: node1, depth: 1 });
+		const node2Schema = flattenSchema({ schema, node: node2, depth: 1 });
+
+		expect(node1Schema[0].id).not.toBe(node2Schema[0].id);
+	});
 });
diff --git a/packages/editor-ui/src/composables/useDataSchema.ts b/packages/editor-ui/src/composables/useDataSchema.ts
index 8896f8dd7e..9b06485713 100644
--- a/packages/editor-ui/src/composables/useDataSchema.ts
+++ b/packages/editor-ui/src/composables/useDataSchema.ts
@@ -282,6 +282,8 @@ export const useFlattenSchema = () => {
 			path: schema.path,
 		});
 
+		const id = `${node.name}-${expression}`;
+
 		if (Array.isArray(schema.value)) {
 			const items: RenderItem[] = [];
 
@@ -293,14 +295,14 @@ export const useFlattenSchema = () => {
 					depth,
 					level,
 					icon: getIconBySchemaType(schema.type),
-					id: expression,
+					id,
 					collapsable: true,
 					nodeType: node.type,
 					type: 'item',
 				});
 			}
 
-			if (closedNodes.value.has(expression)) {
+			if (closedNodes.value.has(id)) {
 				return items;
 			}
 
@@ -327,7 +329,7 @@ export const useFlattenSchema = () => {
 					level,
 					depth,
 					value: shorten(schema.value, 600, 0),
-					id: expression,
+					id,
 					icon: getIconBySchemaType(schema.type),
 					collapsable: false,
 					nodeType: node.type,