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.

Cannot use spaces in editors within groups.
Instead space triggers expand/collapse state

When using Wrap Layout, with grouping and RowHeight is  not default the scrollbar size is incorrectly updated until all elements are measured once.

I can pull to refresh, but I only see the original pulltorefreshstyle. It seems to not raise the visualstates for RefreshStarting or Refreshing.

We have a simple RadDataBoundListBox filled with some elements.
We try to show/scroll to some specific element using the "BringIntoView" method.

EXPECTED result: The specified element should be shown.
ACTUAL result: Depending on the initial condition (if any manual scroll is performed in the RadDataBoundListBox or not), the result is:
- blank/empty RadDataBoundListBox if no manual scroll was performed
- Scroll to some element (usually "near" the requested one), but not exactly to the desired one, if there was some scrolling before invocation of the BringIntoView.

Hey,

I noticed, that in your sample app, when e.g. in the DateTimePicker´s input page, the back button brings you to the previous page and not to the page, where the DateTimePicker is located.

I saw that you are using a Popup to display picker pages. This leads you to the problem, that you cannot override the apps BackPressed bahaviour.

I could not find anything in your controls to check the Popup-state nor to manually dismiss the popup.
In my oppinion, this makes all your picker controls unusable for Windows Phone, as closing the popup is the default WP behavour.
What is you take on this?

Best
Till

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...

Available in the R2 2018 release.

Available in the R2 2018 release.