Completed
Last Updated: 13 Nov 2026 12:02 by ADMIN
Release Q4 2026
The ColorSpace element is not required for images which are using JPXDecode filter.
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.
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.
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

Completed
Last Updated: 07 Oct 2026 13:39 by ADMIN
Release 2026.3.1007
Currently, RadRichTextBox supports the import and export of shapes from and to Office Open XML (DOCX). When exporting to PDF, the shapes are converted to images. When exporting to other formats the shapes are lost.
Completed
Last Updated: 07 Oct 2026 13:39 by ADMIN
Release 2026.3.1007
ADMIN
Created by: Tanya
Comments: 10
Category: Spreadsheet
Type: Feature Request
22
Implement functionality to rotate the text in a cell.
Completed
Last Updated: 07 Oct 2026 13:39 by ADMIN
Release 2026.3.1007
Created by: Michel
Comments: 2
Category: PDFViewer
Type: Feature Request
14
An implementation of JPXDecoder should be created to allow the decompression of data encoded using the wavelet-based JPEG2000 standard.

Guidelines of how to provide a custom implementation of the JPXDecode filter can be found in the Customize Rendering section of the documentation and a sample implementation can be found in the SDK examples.
Completed
Last Updated: 07 Oct 2026 13:38 by ADMIN
Release 2026.3.1007
When clicking the RadSpeechToTextButton, Azure Cognitive Services returns a network error.
Completed
Last Updated: 07 Oct 2026 13:38 by ADMIN
Release 2026.0.1007

In RadGanttView, the drag reorder visual element position indicators ('Before', 'After', and 'Inside') are not translated according to the application's UI culture settings (e.g., German), remaining displayed in English because they are hardcoded in the element's template.

To work this around, create a custom DragReorderTemplate and apply it via the CueTemplateSelector of GanttDragResizeVisualCue. This can be applied via an implicit style defined in App.xaml.

 <Style TargetType="telerik:GanttDragResizeVisualCue">
     <Setter Property="CueTemplateSelector">
         <Setter.Value>
             <telerik:GanttDragVisualCueContentTemplateSelector DragTemplate="{StaticResource GanttDragResizeVisualCueTemplate}"
                                                         ResizeTemplate="{StaticResource GanttDragResizeVisualCueTemplate}"
                                                         CreateDependencyTemplate="{StaticResource GanttCreateDependencyTemplate}"
                                                         DragReorderTemplate="{StaticResource CustomGanttDragReorderTemplate}" />
         </Setter.Value>
     </Setter>
 </Style>

Completed
Last Updated: 07 Oct 2026 13:37 by ADMIN
Release 2026.3.1007
Created by: Dinko
Comments: 0
Category: UI for WPF
Type: Bug Report
0
IsAIButtonVisible property is not respected as there is no binding to the ribbon group it is meant to hide when set to False.
 


The committed RadSpreadsheetRibbon_style.xaml renders the AI group unconditionally:


<telerikRibbon:RadRibbonGroup Header="AI">

Workaround: 

private void HideAIButton()
{
    var aiButton = this.spreadsheetRibbon
        .ChildrenOfType<RadRibbonButton>()
        .FirstOrDefault(b => b.Text == "AI Tools");
    if (aiButton == null)
    {
        return;
    }

    var aiGroup = aiButton.ParentOfType<RadRibbonGroup>();
    if (aiGroup != null)
    {
        aiGroup.Visibility = Visibility.Collapsed;
    }
    else
    {
        aiButton.Visibility = Visibility.Collapsed;
    }
}


Completed
Last Updated: 07 Oct 2026 13:37 by ADMIN
Release 2026.3.1007
Loading/editing document with large lists (with 1561 or more items) throws IndexOutOfRangeException when incorrectly tries to convert numbering to letters.

Workaround: Change list type to one which does not include letter NumberingFormat in any of its levels, for example Numbered Hierarchical or custom one.
Completed
Last Updated: 07 Oct 2026 13:36 by ADMIN
Release 2026.3.1007

ArgumentException: WebView2 was already initialized with a different CoreWebView2Environment. Check to see if the Source property was already set or EnsureCoreWebView2Async was previously called with different values.

at Microsoft.Web.WebView2.Wpf.WebView2Base.EnsureCoreWebView2Async(CoreWebView2Environment environment, CoreWebView2ControllerOptions controllerOptions)

Completed
Last Updated: 07 Oct 2026 13:36 by ADMIN
Release 2026.3.1007
In this scenario, the RadRichTextBox is placed inside a RadTabControl. When switching between tabs and returning to the tab containing RadRichTextBox, we can no longer type in the control.
Completed
Last Updated: 07 Oct 2026 13:36 by ADMIN
Release 2026.3.1007

Steps to reproduce:

1. Open Word 2016 or later. Create a new blank document. Type any text. **File → Save As** → `original.docx`.
2. Verify mode 15: rename `original.docx` to `.zip`, open `word/settings.xml`, confirm `<w:compatSetting w:name="compatibilityMode" ... w:val="15"/>`. Rename back to `.docx`.
3. Open Telerik's WPF Demos sample in Microsoft Store (RichTextBox demo). Open `original.docx`.
4. Without making any edit, click **Save** (or File → Save As) → `roundtrip.docx`.
5. Rename `roundtrip.docx` to `.zip` and open `word/settings.xml`. The value is now `<w:compatSetting w:name="compatibilityMode" ... w:val="14"/>`.
Completed
Last Updated: 07 Oct 2026 13:36 by ADMIN
Release 2026.3.1007
If header/footer containing annotations is set to a document using RadDocumentEditor.ChangeSectionHeader or ChangeSectionFooter methods, the annotations in the body of the header/footer are not paired in the resulting document.

When such document is exported to XAML, NullReferenceException is thrown in the ReindexAnnotationMarkers internal method.

Workaround:
- Do not use RadDocumentEditor to set the footer:
//editor.ChangeSectionFooter(radDocument.Sections.First, HeaderFooterType.Default, new Footer { Body = footerRadDocument });
radDocument.Sections.First.Footers.Default.Body = footerRadDocument;

- Manually "fix" the cloned footer body before the export:
((ISupportInitialize)radDocument.Sections.First.Footers.Default.Body).EndInit();
Completed
Last Updated: 07 Oct 2026 13:35 by ADMIN
Release 2026.3.1007
The text content control (SDT form) cannot be edited when the Lock property of the associated SdtProperties is set to SdtLocked. The SdtLocked setting should prevent deletion of the form only, but the user should be able to still edit the text. 
The issue reproduces only if the content control was locked before any text is entered (when the text placeholder is displayed). 

 
Completed
Last Updated: 07 Oct 2026 13:35 by ADMIN
Release 2026.3.1007
The settings of the empty paragraphs in the document fallback to the default document settings (Verdana).

The EnumerateChilderOfType() method can be used to traverse all the paragraphs in the document and apply them the same font family as a workaround.
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