In the Accordion the control there is an option to allow collapse all. I also see the option to set which item is expanded by default. However I would like to have all features opened by default. I think it would be an easy addition to be added to the control and this would give another option for flexibility when it comes to laying out how the UI interacts with the consumer.

when you want to set corner radius to RadBorder, the Accordion Background is visible behind the border