When you proper the ItemsSource with the right value XAML does not quickly reilitialize the collection of things. The dilemma is "exactly what is the main difference...", but essentially the most voted responses respond with "as opposed to telling you what on earth is the main difference I'm telling you https://propertyingurgoan.photo.blog/2025/07/11/book-a-smart-home-at-aipl-lake-city-sector-103-today/