update: almost fixed

app/lib/utils/custom_search_delegate.dart

@@ -69,7 +69,9 @@ class CustomSearchDelegate extends SearchDelegate {
             title: Text(result),
             onTap: () {
               onResultSelected(result);
-              close(context, result);
+              Future.delayed(const Duration(milliseconds: 1500), () {
+                close(context, result);
+              });
             },
           );
         }