Create a contour plot control for Silverlight. http://mathworld.wolfram.com/ContourPlot.html

Create a Button editor control

Develop  a new control - Reflection Control.

This blends the text with the background and only a black rectangle is displayed. See the attached image.

InvalidProjectFileException is thrown when ApiAnalyzer cannot find the file Microsoft.VisualStudio.ServiceModel.targets referenced from a WPF project.

Add a way to aggregate TimeSpan values and apply different string formats. 

Something like an image Viewer for WPF with some kind of animation, not too fancy though.

Currently, the design-time theme changer automatically removes previous references to Telerik themes. If the application has runtime theme change logic, the old theme references are needed and the developer needs to add them manually, which is annoying.

Add support for debugging Telerik UI for WPF using Intellitrace.
https://blogs.msdn.microsoft.com/visualstudioalm/2015/01/16/intellitrace-in-visual-studio-ultimate-2015/

Allow to define ChartGrid for axis, not for chart.
Every Axis can draw our grid lines.
Chart.Grid can be a wrapper for Chart.Horizontal and Chart.Vertical axes.

marc.

Available in the 2016 R3 Release.

Please take a look at our help article for more information:
http://docs.telerik.com/devtools/wpf/controls/radpasswordbox/overview

There is an open source library (http://bitmiracle.com/libtiff) that can be used to convert the TIFF images to different formats and then visualize the resultant file with an appropriate control (e.g. convert the TIFF to PDF document and import it in RadPdfViewer).

When add references to GridView, GanttView, Input, Pivot, PivotFieldList binaries and open VisualStudio designer, add telerik schema and open VS designer, the following exceptions are shown in output window: 
There was an exception when loading the design time assembly 'C:\Users\Andy\AppData\Local\Microsoft\VisualStudio\14.0\Designer\ShadowCache\vnccr3tx.jie\tpt1i54e.lhk\Design\Telerik.Windows.Controls.GanttView.Design.5.0.dll':
Exception has been thrown by the target of an invocation.
There was an exception when loading the design time assembly 'C:\Users\Andy\AppData\Local\Microsoft\VisualStudio\14.0\Designer\ShadowCache\rcuor1yw.trm\3pfbopk0.jq2\Design\Telerik.Windows.Controls.GridView.Design.5.0.dll':
Exception has been thrown by the target of an invocation.
There was an exception when loading the design time assembly 'C:\Users\Andy\AppData\Local\Microsoft\VisualStudio\14.0\Designer\ShadowCache\5dbl0ard.vq2\ryoz1p4c.qfj\Design\Telerik.Windows.Controls.Input.VisualStudio.Design.4.0.dll':
Unable to load one or more of the requested types. Retrieve the LoaderExceptions property for more information.
Could not load file or assembly 'Telerik.Windows.Core.Design, Version=2016.3.1024.45, Culture=neutral, PublicKeyToken=5803cfa389c90ce7' or one of its dependencies. The system cannot find the file specified.
There was an exception when loading the design time assembly 'C:\Users\Andy\AppData\Local\Microsoft\VisualStudio\14.0\Designer\ShadowCache\1ezw2acw.w0d\41bkmvbl.kft\Design\Telerik.Windows.Controls.Pivot.Design.5.0.dll':
Exception has been thrown by the target of an invocation.
There was an exception when loading the design time assembly 'C:\Users\Andy\AppData\Local\Microsoft\VisualStudio\14.0\Designer\ShadowCache\p2ywzsl3.fxy\22f0oc1j.nsf\Design\Telerik.Windows.Controls.PivotFieldList.Design.5.0.dll':
Exception has been thrown by the target of an invocation.

Available in LIB version 2016.3.1121, it will be also available in the 2017 R1 release.

I have a Winforms application (Very Large so there is no changing it any time soon) that launches a WPF window with a .show(). In this WPF window I have radDocking. In one of the RadPanes I have a WPF TextBox. As long as the RadPane is docked the TextBox will receive text. However, if I undock, the TextBox will no longer receive text input.
I do not see this issue, however, when launching the WPF window in my WPF test app.

Please let me know if there is some kind of work around for this issue.

I have attached a test app that I have created which will demonstrate the issue. You will have to point the "TextBoxInRadPanel"  to your Telerik DLLs, they were too big to attach.

Repro Steps:
1. Launch the HostApp
2. Click the "Press Me" button
3. Type into the TextBox in the docked "UC Test" RadPane - input is received
3. Undock the "UC Test" RadPane
4. Attempt to type into the TextBox area - no text input will be received.

Hi!

I really enjoy the features of your products. However, the update mechanism is a complete pain in the ... behind. There are so many updates. Every time we have to run the update wizard, every time this breaks something, especially when working in teams. Updating via the Telerik Control Panel is tedious and time consuming.

Please make this process better. The simplest thing would be to just use NuGet with a VS plugin that validates if a license is present.

I spend hours and hours debugging stuff like this, and I am doing so right now again. The upgrade wizard broke some dependencies and now I have to check EVERY VIEW IN MY APPLICATION to check if there will be runtime errors with AssemblyNotFound "Telerik.Whatever". 

Please, please, I can't take it anymore!

Deliver an icon library which can be easily used in the user's application.