check the attach file,the gridview's droplist extend the screen area,
my screen is 2560x1440/175% DPI/14 inch/windows 10

I am attempting to use a ReleativeSource in my bindings in two places in a RadGridView:  1) the header of a column, and 2) one of the columns.  I am getting "System.Windows.Data Error: 4 : Cannot find source for binding with reference" in both cases.

I don't think I need to elaborate much, since https://www.telerik.com/forums/can%27t-find-the-right-ancestor-to-bind-to not only describes it perfectly, but also contains sample code from Telerik that, on my machine, fails the same way.

Currently, some of the controls from the suite are using custom cursors. They are optimized for 96 DPI only. If you set a higher DPI the custom cursors remain small compared to the window cursors. 

Created several sets of cursors (.cur) and apply different ones for the different DPI. This can be done for RadDiagram, RadSpreadsheet, RadRichTextBox, etc.

Original Title: The mouse cursor is too small when DPI is above 100%
Original Description: With the Diagrams control/Spreadsheet ,the mouse cursor is too small when DPI is above 100%,looking the attach files.

I want to be able to specify the font family, size, etc. from XAML, not from code. 
Exactly the same as described here:
https://www.telerik.com/forums/implicit-styles-custom-font-and-font-size

(background: We are developing a UI Framework + resource dictionary for use in different applications. If each app will have to modify font sizes from code, inconsistencies are surely happen)

Affects RadDateTimePicker control of TelerikWPFControls version 2015.1.1

When the user is typing in a specific date and time, the RadDateTimePicker control's text-to-date parsing doesn't accept an uppercase 'A' at the start of what it expects to be the month's name and automatically errors (displays a tooltip showing 'Error') as soon as an 'A' is input. This prevents the user from entering dates and times more specific than the clickable selection for the months of 'April' and 'August'. However, replacing the 'A' with a lowercase 'a' allows the user to proceed with entering more specific dates and times as normal without the 'Error' tooltip showing. 

E.g.: 
1) the user selects 03 April 2018 17:00:00 from the control's clickable selection of date and times;

2) they then try to type more specific minutes and seconds, e.g. 03 April 2018 17:45:23, but this is not accepted by the control and it displays the 'Error' tooltip;

3) workaround - the user changes 'A' of 'April' to a lowercase 'a', as in 'april'. Now the 'Error' tooltip goes away and the user is able to enter and save the more specific date time of 03 april 2018 17:45:23.

This bug only came to light once the control was live in production (released in January) and prevented our users from entering the specific trade date times necessary for regulatory purposes.

Can you tell me if this bug has been fixed in later versions of the control?

Thanks and regards,

Robert Fiteni

looking the attach file,when resize the second gridview's column moving back and forth when at first run the sample,the after columns flicker and the width grow and lessen.and when resize the third column,the 'unit price' column will become the min width.
but when test the microsoft's datagrid,it is good,the any other column width's change is gentle.

List numbering should be restarted when copied list is pasted after content that is not in a list.

Steps to reproduce:
1. Create a file with a list, a blank line, some text, and another blank line
2. Copy the list
3. Paste it on the blank line directly after the list
Expected: The items are added to the end of the existing list
Observed: The items are added to the end of the existing list
4. Paste it on the blank line after the text
Expected: The items are added to a new list and start numbering at 1
Observed: The items are added to the existing list and start numbering at 7

Workaround:
private void RadRichTextBox_CommandExecuting(object sender, Telerik.Windows.Documents.RichTextBoxCommands.CommandExecutingEventArgs e)
{
    if (e.Command is PasteCommand)
    {
        DocumentPosition position = new DocumentPosition(this.radRichTextBox.Document);
        position.MoveToPosition(this.radRichTextBox.Document.CaretPosition);
        position.MoveUp();
        Paragraph previousParagraph = position.GetCurrentParagraphBox().AssociatedParagraph;
        if (previousParagraph.IsInList)
        {
            // We shouldn't restart the numbering when the previous paragraph is in a list.
            return;
        }

        RadDocument doc = ClipboardEx.GetDocument().ToDocument();
        Paragraph firstParagraph = doc.EnumerateChildrenOfType<Paragraph>().First();
        if (firstParagraph != null && firstParagraph.IsInList)
        {
            RadDocumentEditor editor = new RadDocumentEditor(doc);
            editor.Document.CaretPosition.MoveToStartOfDocumentElement(firstParagraph);
            editor.RestartListNumbering();
        }

        this.radRichTextBox.InsertFragment(new DocumentFragment(doc));
        e.Cancel = true;
    }
}

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).