Completed
Last Updated: 11 Nov 2026 15:27 by ADMIN
Release Q4 2026 (November)

The IsBusy property of RadBusyIndicator does not correctly reflect the value of its data-bound source when the control is unloaded and then loaded again while using a OneWay binding.

A common scenario where this occurs is when RadBusyIndicator is hosted inside a TabItem of a TabControl:

  1. IsBusy is bound (OneWay) to a ViewModel property whose value is True.
  2. The user switches to another tab, causing the RadBusyIndicator to be unloaded.
  3. During the unload process, the control internally sets its IsBusy property to False.
  4. The ViewModel property remains True.
  5. When the user navigates back to the original tab, the RadBusyIndicator is loaded again.
  6. Although the bound ViewModel property is still True, the control's IsBusy property remains False.

The binding is not re-evaluated when the control is loaded again, resulting in the control displaying a stale value that is out of sync with the bound ViewModel property.

Completed
Last Updated: 11 Nov 2026 15:27 by ADMIN
Release Q4 2026 (November)

TooltipContentTemplate does not apply on Windows11/Windows Server 2025

 

 

Completed
Last Updated: 11 Nov 2026 15:27 by ADMIN
Release Q4 2026 (November)
Rendering issues occure when using Hierarchical virtualization mode and bring into view.
The issue is hit in both platforms - WPF and Silverlight. 
Completed
Last Updated: 11 Nov 2026 15:26 by ADMIN
Release Q4 2026 (November)
Sub-items of the parent RadNavigationViewItem instances could disappear when changing the view mode of RadNavigationView.
Unplanned
Last Updated: 11 Nov 2026 13:49 by ADMIN
InvalidCastException when touching a Run element with ShouldSuspendMousePromotion enabled
In Development
Last Updated: 11 Nov 2026 09:23 by ADMIN
When AdomdDataProvider (RadPivotGrid) has a multi-level user hierarchy (for example Calendar: Year > Week) as the first row group description, followed by two or more further row hierarchies (for example Customer and Code), the aggregate value of each top-level group (the year rows) is not the group total. It is the value of the last member of the second hierarchy within that group (the last customer in the year). The grand total is correct.
Unplanned
Last Updated: 09 Nov 2026 13:32 by ADMIN
Remove warning error NU1605 Detected package downgrade: System.IO.Hashing from 10.0.3 to 8.0.0
Completed
Last Updated: 09 Nov 2026 13:19 by ADMIN
Release 2026.4.1109 (2026 Q4)
When rendering PDF file with a TrueType font and Unicode platform Id (platformId: 0), glyphs are not obtained from CMAP table and are displayed with default rectangle placeholders.
In Development
Last Updated: 09 Nov 2026 12:16 by ADMIN
ADMIN
Created by: Telerik Admin
Comments: 1
Category: GanttView
Type: Feature Request
18
Allow creating of recurring tasks
Unplanned
Last Updated: 09 Nov 2026 09:25 by Martin Ivanov
NullReferenceException originating in the WebView2 API can occur when RadSpeechToTextButton is rapidly added to and removed from the UI, including repeatedly opening and closing windows containing the button. The issue occurs with the default WebView2 speech recognizer.

System.NullReferenceException
at Microsoft.Web.WebView2.Wpf.WebView2Base.<>c__DisplayClass32_0.<<EnsureCoreWebView2Async>g__Init|0>d.MoveNext()

In Development
Last Updated: 06 Nov 2026 06:20 by ADMIN
Scheduled for Q4 2026 (November)
Currently when ScaleTransform is used ether on the RadDocking control or its container the compasses/drop cues which are shown when docking a RadPane instance have incorrect scaling and are placed incorrectly.

By design the control's scaling is determined by the scaling of the OS environment.
In Development
Last Updated: 05 Nov 2026 13:13 by ADMIN
Scheduled for Q4 2026 (November)
If you move an item from one level to another into the tree, the indent of the corresponding row won't get updated. This is reproducible only if the new parent of the moved item is expanded, while the operation is executed.

Usually, this can be reproduced by calling the ExpandHierarchyItem() for the new parent item method just after the moving of the original item.

To resolve this you can delay the expanding of the item. Note that the expanding is executed manually by calling the ExpandHierarchyItem() method. So, you can use a dispatcher with a lower DispatcherPriority to delay this.

Or alternatively, you can collapse the item before expanding it (using the CollapseHierarchyItem() method).
Completed
Last Updated: 04 Nov 2026 22:01 by ADMIN
Created by: Kevin
Comments: 1
Category: UI for WPF
Type: Feature Request
3

Hi Team,

I have set up SSO and it's great so far. I have a feature request that would make it even better, and solve many large enterprise needs, is to have a way to integrate SCIM based license provisioning as well.

Right now, you still do need to manage licensed users on the Manage Licensed Users portal. A License Holder or License Manager needs to add a Developer to the account and assign them a license.

With SCIM integration, we could better manage the users and licensing on a larger scale, with automation and oversight on the enterprise-managed SSO identity.

Thank you,

Kevin

In Development
Last Updated: 04 Nov 2026 13:32 by ADMIN
Scheduled for Q4 2026 (November)
The text elements in a document are positioned wrongly and are slightly offset from their expected positions.
In Development
Last Updated: 04 Nov 2026 13:31 by ADMIN
Scheduled for Q4 2026 (November)
COMException: 'Exception from HRESULT: 0x8052000C' breaks the printing of the a specific document.
In Development
Last Updated: 04 Nov 2026 13:31 by ADMIN
Scheduled for Q4 2026 (November)
When displaying PDF-Files using PDFViewer, ContentElementsCanvas .RenderAsync uses reflection (DispatcherObjectUtils.ApplyDispatcher) to render Visuals on multiple threads.
However this leads to a memory leak since the dispatchers cant be GC'ed, see screenshot below.




The Screenshot is from the actual application we expirienced this issue with, the attached reproduction example is a boiled down version of what your code does.
If you wanna reproduce this on your own, create an application that uses PdfViewer that switches between many pdf files. The ammount of Dispatchers will grow steadily, probably to a total of the number of threads used by Task.Factory.

In Development
Last Updated: 04 Nov 2026 13:31 by ADMIN
Scheduled for Q4 2026 (November)

HTML import fails when an image has an align tag set to a value different from center

<img align="top"
     width="170" height="61" />

 

In Development
Last Updated: 04 Nov 2026 13:29 by ADMIN
Scheduled for Q4 2026 (November)
The character properties applied on the last paragraph symbol for a paragraph in a list (e.g. font family), are exported to HTML for the whole paragraph which is in the list. 

As a notable side effect, when such HTML is imported, the default font size for a paragraph in a default bullet list changes to Symbol.

Regression: The bug is introduced in 2016_2_613.


Workaround: Change the styles to export as inline properties:
htmlProvider.ExportSettings.StylesExportMode = StylesExportMode.Inline;

but be aware that this may cause issues as described in the related RichTextBox: Character properties of the paragraph symbol are not exported to HTML when StyleExportMode is Inline
In Development
Last Updated: 30 Oct 2026 13:46 by ADMIN
The ColorSpace element is not required for images which are using JPXDecode filter.
Unplanned
Last Updated: 22 Oct 2026 10:27 by ADMIN

The filter is not updated when the DeferTextChange property is set to True.  The properties set to the control:

<telerik:RadMultiColumnComboBox x:Name="OptionsComboBox"
                                DisplayMemberPath="Name"
                                NullText="Select an option..."
                                CloseDropDownAfterSelectionInput="True"
                                DropDownWidth="440" DropDownHeight="220"
                                Height="32"
                                SelectionBoxesVisibility="Collapsed"
                                AutoCompleteMode="SuggestAppend"
                                ClearSelectionOnDeleteOrBackKey="True"
                                DeferTextChange="True">
. . . . . 
It is reproducible using the following steps:

1. Select Banana from the dropdown. It should appear as editable text without the little × button.
2. Reopen the dropdown, so we can se it
3. Click in the middle of banana in the textbox(not the dropdown), then Ctrl+A and type zz.
4. Wait a second, then Ctrl+A, Backspace.

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