Create a feature in the RadTileList control that allows the user to select multiple tiles, but only one (or maybe, any number - it could be a property that is set for this specific kind of selection) per group.
This was first discussed on this forum thread: https://www.telerik.com/forums/multiple-selection-single-selection-per-group and it's the reason behind this feature request.
The current workaround to overcome this "issue" is also available through that link.
As a workaround you can apply the style explicitly or through an ItemContainerStyleSelector.
Make Tile.DisplayIndex property a dependency property so it can be can be set through data binding.
RadTileList: Memory leak when removing items from the collection of ItemsSource of the RadTileList and then change any property of any of the removed items. Available in LIB version: 2017.2.605
This will allow to have different visual customization for the separate groups.
The horizontal scrollbar disappears setting RadTileList's background to black and when Windows8Touch theme is used. Declined: By default the ScrollBar's Thumb in Windows8Touch theme is transparent black and it is expected not to be visible on black background. For customization of the ScrollBar see attached project: 1. Extract the Style and Control Templates for the ScrollBar and its components from the System.Windows.xaml 2. Modify the HorizontalThumb and VerticalThumb's backgrounds to any color different from black - e.g. MainBrush, which is white in Windows8Thouch theme, change any needed opacities in the VisualStates 3. Apply the style globally for your application in App.xaml or only to the needed controls - in their <Control>.Resources (including all its needed resources)