Release History

Telerik UI for ASP.NET MVC 2026.1.212 (2026 Q1)

February 12, 2026

Common

NEW

• New PromptBox Component
• New AI Smart Paste Component

Breaking Changes

• Set default appearance to components

Dependencies

• Telerik Document Processing Library (DPL) version (2026.1.210)
• Fluent Theme Package (v.13.0.0)
• Classic Theme Package (v.13.0.0)
• Bootstrap Theme Package (v.13.0.0)
• Default Theme Package (v.13.0.0)
• Material Theme Package (v.13.0.0)

ButtonGroup

Breaking Changes

• Change default badge themeColor for ButtonGroup

Chat

Breaking Changes

• Enhanced Chat Component capabilities

Diagram

Breaking Changes

• Diagram Tooltips and Connection improvements

Grid

NEW

• SmartBox tool

FIXED

• The Save changes and Cancel changes buttons do not appear on Grid (8424)
• The Save changes and Cancel changes buttons do not appear on Grids when clicking on a cell where edit is disabled (8423)

MediaPlayer

FIXED

• Inaccurate MediaPlayer timeline on changing source via media method (7060)

Menu

FIXED

• AuthorizationContext logic caches incorrectly RouteData

MultiSelect

FIXED

• MultiSelect with autoClose true does not clear search value when an item is selected (8429)

Notification

NEW

• Add closeButton support to Notification show and showText methods (8256)

Breaking Changes

• Change default type of notification in show method

PivotGridV2

FIXED

• Pivotgridv2 measure is not slicing the data by the second attribute when expanding (8226)

Scheduler

FIXED

• Virtual Scheduler returns wrong resources in slotTemplate (8381)

Sparkline

FIXED

• Sparkline throws exception when configuring a bullet series

Spreadsheet

FIXED

• When calling the Workbook.ToJSON method on a workbook document where all cells have AnyValueDataValidation the application crashes (7935)

TabStrip

FIXED

• TabStrip with DOM DataSource rendering does not update contentUrls when updated through the options (8425)
• Setting Encoded false is not respected - text in TabStrip tabs is always encoded (8416)

Breaking Changes

• Remove k-item class from from k-tabstrip-item element