TelerikChartAxisBorderBrush is not applied when setting in Dark Light ThemeResources from the Telerik Theme Resources https://docs.telerik.com/devtools/universal-windows-platform/common/teleriknamedbrushes 

When you have several series(ScatterLineSeries reported but it happens with others as well) in the RadCartesianChart and you clear the Items of one of them by calling the Clear() method - the line is not redrawn and it shows the old data. 

When using shp and dbf files with ~130MB size, it takes minutes to load the map

The uwp radlistview vertical scrollbar disappears when focus is lost -
I think I need something like 
https://www.telerik.com/forums/listview-width-with-or-without-vertical-scrollbar
 <telerik:RadListView.Commands. ListElement.Scroller.Scrollbar.FillElement.Visibility

But I may be missing something?

Testing the Telerik RadialMenu control in the UWP app ,  when you click on the radialmenu the control flickers for the mouseclick event on desktop.  plse consider changing the "flicker" to something more like a keypress , a image blur or something else. Or slow down the flicker considerable , your effect looks more like a defect of image rendering at the moment. 

When you set the Required attribute on a property of an object that is used for the DataForm, it is not respected by the control.

Stack trace:

Type: KeyNotFoundException

Message: Arg_KeyNotFound
   at Telerik.Data.Core.Layouts.StaggeredRenderInfo.PhysicalOffsetFromSlot(Int32 slot)
   at Telerik.Data.Core.Layouts.StaggeredLayout.PhysicalOffsetFromSlot(Int32 slot)
   at Telerik.UI.Xaml.Controls.Data.ListViewModel.ScrollIndexIntoView(UI.Xaml.Controls.Primitives.ScrollIntoViewOperation<System.Nullable<Telerik.Data.Core.Layouts.ItemInfo>> operation)
   at Telerik.UI.Xaml.Controls.Data.ListViewModel.<>c__DisplayClass55_0.<ScrollIndexIntoViewCore>b__0()
   at System.Action.Invoke()
   at Telerik.UI.Xaml.Controls.Primitives.DelegateUpdate<Telerik.UI.Xaml.Controls.Grid.UpdateFlags>.Process()
   at Telerik.UI.Xaml.Controls.Primitives.UpdateServiceBase<Telerik.UI.Xaml.Controls.Data.ListView.UpdateFlags>.ProcessUpdatesQueue()
   at Telerik.UI.Xaml.Controls.Primitives.UpdateServiceBase<Telerik.UI.Xaml.Controls.Data.ListView.UpdateFlags>.DispatchUpdates()
   at Telerik.UI.Xaml.Controls.Primitives.UpdateServiceBase<Telerik.UI.Xaml.Controls.Data.ListView.UpdateFlags>.OnUpdateCallback()

Version of Telerik.UI.for.UniversalWindowsPlatform 1.0.0.3

Range is rendered incorrectly when using negative range values.

System.Runtime.InteropServices.COMException is thrown when navigating through the child items of the RadialMenuItem. It is easily reproducible when clicking fast to go to the most inner child items of a RadialMenuItem.

See this Screencast for a short video of the issue at runtime: https://www.screencast.com/t/YXm6xOtO 

Here's the code to reproduce: 

<grid:RadDataGrid ItemsSource="{x:Bind ViewModel.DataItems, Mode=OneWay}"
                  UserGroupMode="Disabled"
                  UserFilterMode="Disabled"
                  UserColumnReorderMode="None"
                  UserSortMode="None"
                  AutoGenerateColumns="False"
                  GridLinesVisibility="Horizontal">
    <grid:RadDataGrid.Columns>
        <grid:DataGridNumericalColumn Header="1"
                                      PropertyName="Key"
                                      SizeMode="Auto" />
        <grid:DataGridTextColumn Header="2"
                                 PropertyName="First"
                                 SizeMode="Auto" />
        <grid:DataGridTextColumn Header="3"
                                 PropertyName="Second"
                                 SizeMode="Auto" />
        <grid:DataGridTextColumn Header="Stretchy"
                                 PropertyName="Stretch"
                                 SizeMode="Auto" />
        <grid:DataGridTextColumn Header="5"
                                 PropertyName="SecondLast"
                                 SizeMode="Auto" />
        <grid:DataGridTextColumn Header="6"
                                 PropertyName="Last"
                                 SizeMode="Auto" />
        <grid:DataGridNumericalColumn Header="7"
                                      PropertyName="Count"
                                      SizeMode="Auto" />
    </grid:RadDataGrid.Columns>
</grid:RadDataGrid>

See this forum thread for reproducible and workaround: http://www.telerik.com/community/forums/legend-will-only-display-labels-(windows-10)

In some specific scenarios, scrolling the RadDataGrid results in IndexOutOfRangeException

Exception = {System.IndexOutOfRangeException: Index was outside the bounds of the array.
   at Telerik.UI.Xaml.Controls.Grid.IndexStorage.ValueForIndex(Int32 index, Boolean approximate)
   at Telerik.Data.Core.Layouts.CompactLayout.UpdateAverageLength(Int32 startInde...