Released: Feb 12, 2026

Updates in 2026 Q1 (2026.1.212)

Features

• Common:
  • Added a new PromptBox Component.
  • Added a new AI Smart Paste Component.
  • Breaking Changes - Set default appearance to the components.
  • Updated Telerik Document Processing Library (DPL) version (2026.1.210).
  • Updated Fluent Theme Package (v.13.0.0).
  • Updated Classic Theme Package (v.13.0.0).
  • Updated Bootstrap Theme Package (v.13.0.0).
  • Updated Default Theme Package (v.13.0.0).
  • Updated Material Theme Package (v.13.0.0).
• ButtonGroup:
  • Breaking Changes - Changed the default badge themeColor for ButtonGroup.
• Chat:
  • Breaking Changes - Enhanced Chat Component capabilities.
• Diagram:
  • Breaking Changes - Made Diagram Tooltips and Connection improvements.
• Grid:
  • Added a new SmartBox tool.
• Notification:
  • Added closeButton support to the Notification show and showText methods.
  • Breaking Changes - Changed the default type of notification in the show method.
• TabStrip:
  • Breaking Changes - Removed k-item class from k-tabstrip-item element.

Fixes

• Chart:
  • Fixed an issue where setting 'TemplateId' for the crosshair tooltip of the Chart's XAxis, YAxis or ValueAxis throws an exception.
• Gantt:
  • Fixed an issue where Gantt Draggable and Group column builders throw exceptions when Sortable and Editor fluent overloads are used.
• Grid:
  • Fixed an issue where adding template component in Grid toolbar results in watermark and licensing banner.
  • Fixed an issue where the Save changes and Cancel changes buttons do not appear on Grid.
  • Fixed an issue where the Save changes and Cancel changes buttons do not appear on Grids when clicking on a cell where edit is disabled.
• Map:
  • Fixed an issue where using a WebAPI DataSource for a Map layer will throw an exception.
• MediaPlayer:
  • Fixed the inaccurate MediaPlayer timeline on changing source via media method.
• Menu:
  • Fixed an issue where setting the open-on-click enabled="true" Menu configuration without setting the scrollable configuration will throw an exception.
• MultiSelect:
  • Fixed an issue where MultiSelect with autoClose true does not clear search value when an item is selected.
• PivotGridV2:
  • Fixed an issue where Pivotgridv2 measure is not slicing the data by the second attribute when expanding.
• Scheduler:
  • Fixed an issue where virtual Scheduler returns wrong resources in slotTemplate.
• Slider:
  • Passing a Dictionary to ScriptAttributes throws an exception.
• Spreadsheet:
  • When calling the Workbook.ToJSON method on a workbook document where all cells have AnyValueDataValidation the application crashes.
• TabStrip:
  • Fixed an issue where TabStrip throws an exception when configuring tab action.
  • Fixed an issue where TabStrip with DOM DataSource rendering does not update contentUrls when updated through the options.
  • Fixed an issue where setting Encoded false is not respected - text in TabStrip tabs is always encoded.
• TaskBoard:
  • Fixed an issue where TaskBoard will throw exception if no DataSource is specified for a Resource.
• TreeList:
  • Fixed an issue where TreeList throws an exception when configuring a toolbar tool template.