diff --git a/packages/monaco-editor-wrapper/test/editorAppClassic.test.ts b/packages/monaco-editor-wrapper/test/editorAppClassic.test.ts
index b9539ea..18cb8b5 100644
--- a/packages/monaco-editor-wrapper/test/editorAppClassic.test.ts
+++ b/packages/monaco-editor-wrapper/test/editorAppClassic.test.ts
@@ -37,4 +37,16 @@ describe('Test EditorAppClassic', () => {
         const app = new EditorAppClassic('config defaults', config);
         expect(app.getConfig().editorOptions?.['semanticHighlighting.enabled']).toEqual('configuredByTheme');
     });
+
+    test('isAppConfigDifferent: non-simple properties"', () => {
+        const config1 = buildConfig();
+        const config2 = buildConfig();
+        const configclassic1 = config1.wrapperConfig.editorAppConfig as EditorAppConfigClassic;
+        configclassic1.editorOptions!['semanticHighlighting.enabled'] = true;
+        const configclassic2 = config2.wrapperConfig.editorAppConfig as EditorAppConfigClassic;
+        configclassic2.editorOptions!['semanticHighlighting.enabled'] = true;
+
+        const app = new EditorAppClassic('config defaults', config1);
+        expect(app.isAppConfigDifferent(configclassic1, configclassic2, false)).toEqual(false);
+    });
 });