When you open multiple desktop alerts with a single alerts manager, they stack up one above the other. At some point the alerts can reach the height of the screen. In this case, the newly opened alerts will start to stack up in the upper edge of the screen.
Add an option to allow hosting the alerts in a element that can display a vertical scrollbar when the alerts exceed the monitor size.
Currently, the automation peers logic of the window that hosts the RadDesktopAlert control is internal, which does not allow for customizations. We could revise this logic and update it to allow for customizations.