Release History

Telerik UI for WPF 2026.3.1007

October 7, 2026

Common

FIXED

• Learning Center and Theming tabs are not visible in the suggested actions popup for controls in the designer.

Dependencies

• Minimum required Telerik Licensing version updated to 1.9.3.
• Telerik Document Processing Library (DPL) version updated to 2026.3.1006.

Buttons

FIXED

• Speech-To-Text-Button: A network error is thrown when clicking on the button.

GanttView

FIXED

• Drag reorder position indicators Before, After, and Inside are not translated under non-English UI culture.

GridView

FIXED

• Memory leak in internal RadPromptInput control.

Map

FIXED

• Slow loading or missing tiles when using the OpenStreetMap provider.

PDF Viewer

NEW

• Introduce support for JPXDecode Filter. (docs)

RichTextBox

NEW

• Add support for shapes when importing/exporting XAML documents.

FIXED

• CompatibilityMode is changed from val=15 to val=14 when saving a DOCX file without any changes.
• Stop accepting keyboard input when switching tabs.
• Text content control (SDT form) cannot be edited when the Lock property of the associated SdtProperties is set to SdtLocked.
• Document with large list (with more than 1560 list items) throws IndexOutOfRangeException.
• Moving IncludePictureField in result display mode leads to losing the field and duplicating the image.
• NullReferenceException when document with header/footer containing annotations is created with RadDocumentEditor and exported to XAML.

Spreadsheet

NEW

• Implement text orientation for cell content. (docs)

VirtualGrid

NEW

• Introduce events raised when rows and columns get resized. (docs)