User can set AutoCalculateBounds to True by the following way:

 public class CustomClusterGenerator : DefaultClusterGenerator
    {
        public override ClusterData CreateCluster(Location center, object item)
        {
            var clusterData = base.CreateCluster(center, item);
            clusterData.AutoCalculateBounds = true;
            return clusterData;
        }
    }

  this.VisualizationLayer1.ClusterGenerator = new CustomClusterGenerator();

When clustering 4 points:

ObservableCollection<DataItem> items = new ObservableCollection<DataItem>()
            {
                new DataItem() {MapLocation = new Telerik.Windows.Controls.Map.Location(20, 30) },
                new DataItem() {MapLocation = new Telerik.Windows.Controls.Map.Location(20, 34) },

                new DataItem() {MapLocation = new Telerik.Windows.Controls.Map.Location(22, 32) },
                new DataItem() {MapLocation = new Telerik.Windows.Controls.Map.Location(18, 32) },
            };

            this.VisualizationLayer1.ItemsSource = items;

EXPECTED:  ClusterData's Bounds must  be:

WEST: 30 and EAST: 34.

Actual Values are 30 and 30 (29.9999 and 30).

When you start editing the input control, the watermark text should go on top of it or to the left.

You have, for example rectangle which is in ContentControl in XAML, next to FluidC.C.

FluidContentControl is in small state. Ona  button click SmallContent is assigned to the Rectangle.

This leads to the exception stated that rectangle is already a logical child of another element.

I want to have opportunity to disable RadExpander header because I want to programmatically expand or collapse RadExpander control.

The fix will be available in the R1 2018 SP2 Release.

maybe there are some ways to appear the  mouse point offset grow in steps when move the float window in raddocking by mouse drag.but I found when move the float window's header pass the document's tab,don't docking,then release mouse,and then move the float window again back and forth or up and down,the  mouse point offset grow in steps, at last the mouse's point leave the float window's header with hold the window's drag state.

Basing on the "{StaticResource FilterControlStyle}" would cause an InvalidArgumentException, if the types would mismatch. 
If you are to base on a custom style on the default style of either of those controls, you can do it by type reference - e.g. BasedOn="{StaticResource {x:Type telerik:FilteringControl}}"

With the release of the Fluent theme, it would be nice to have a Hamburger Menu control similar to the NavigationView for UWP (https://docs.microsoft.com/en-us/windows/uwp/design/controls-and-patterns/navigationview).

with windows10/2k DPI/14 inch screen ,when show the gridview gridline,the line is different.
     the other things,when the tabitem is selected,the dropdownmenu can't mark the selected item.
   look the attach files!

I know the Transitioncontrol  have the MotionBlurredZoomTransition, the effect is better for image ,but not UI content,especially when the UI use the simple color,the MotionBlurredZoomTransition effect is weak,I find the RadCalendar control with the cool zoom animation,How to realize?
     the other question:How to realize the book turning animation with the Transitioncontrol  ?

It seems that on some devices a touch with the Stylus doesn't fire the WPF native Touch events. Only the Stylus events will be fired. Because the TouchManager internally works only with the WPF Touch events, the manager's events are not fired.

https://www.telerik.com/forums/printing-3559585fdb4e
https://www.telerik.com/forums/print-bb34c69c1e37
https://www.telerik.com/forums/printing-rasscheduleview-mvvm

when only one data ,the Chart3D Bar drawing will exceed the floor,looking the attachments pls.

Hi,

I have implemented a WPF application that displays various pages.

I have the following code that is executed on one of my pages after a user logs in. This same code is executed when the user returns to the page:

If myUser.IsInRole("Master") Or myUser.IsInRole("Administrator") Then
            myRadGridView.SelectionMode = SelectionMode.Multiple
Else
           myRadGridView.SelectionMode = SelectionMode.Single
End If

After logging in the myRadGridView grid behaves as if it is SelectionMode.Single even though my user is in the role "Master" and the code branch above is executed to set the myRadGridView grid into SelectionMode.Multiple.

That being said, if I leave the page and come back to it, the same code is executed and the myRadGridView grid finally behaves as it should be in SelectionMode.Multiple.

How do I fix get this to work?

Thank you.

When using Two-way binding and the RadListBoxSelectedItemsBehavior for RadListBox's SelectedItems, the items are not re-added to the Visual Tree after the theme is changed at runtime. 

css style like the background color for the pinned rows can be different from the rows in the grid to differentiate the rows

CartesianCustomLineAnnotation should allow for rendering options (2D, Bitmap, default) to allow for a consistent visual appearance.