Release History

Telerik UI for ASP.NET AJAX 2026.2.708

July 8, 2026

Common

FIXED

• Visual Studio Design time error rendering the control - Object reference not set to an instance of an object

Dependencies

• Telerik Document Processing Library (DPL) version (2026.2.707)

AsyncUpload

FIXED

• RadAsyncUpload can't be selected from RadTab using arrow key navigation

AutoCompleteBox

NEW

• JavaScript error (Uncaught TypeError: Cannot read property 'keyCode' of undefined) is thrown when selecting an autocomplete suggestion in Chromium browsers

Chart (obsolete)

Breaking Changes

• RadChart is now marked as [Obsolete]. This is the last release that includes the RadChart component. Its source code will be removed from the assembly in the next release. RadChart has been deprecated since Q3 2014 and does not support modern browsers. Migrate to RadHtmlChart for a fully supported, standards-based charting solution. See https://www.telerik.com/products/aspnet-ajax/html-chart.aspx for migration guidance.

ColorPicker

FIXED

• Localizing RadColorPicker using Resource-files not working
• RadColorPicker remains clickable when disabled on client-side

ComboBox

FIXED

• RadComboBox infinite "Loading…" issue after upgrading to 2026.1.225

DatePicker

NEW

• Invalid WAI-ARIA role, state or property for DatePicker

FIXED

• Date/Time/DateTime Picker Items not aligned properly after Q2 update

DropDownTree

NEW

• Add WAI-ARIA support to RadDropDownTree keyboard navigation

FIXED

• RadDropDownTree With CheckBoxes="CheckChildNodes" and CheckChildNodes="false" has no effect

Editor

FIXED

• Track Changes - table insertion loses its tracked change marker after creating a new paragraph
• Nested Ordered/Unordered lists fail to maintain order in Chrome

ListBox

FIXED

• RadListBox checked items not available on the server if the control is enabled on the client
• RadListBox resets scroll position to 0 upon item selection after mouse wheel scrolling

NumericTextBox

FIXED

• NumericTextbox SpinButton layout changed with 2026.2

SegmentedComponent

NEW

• Provided SegmentedControl Designer for Visual Studio Design mode

Scheduler

FIXED

• The tooltips on the navigation buttons display "next day" and "previous day" when navigating month and week

SearchBox

FIXED

• The "Show All Results" in SearchBox is not accessible with a keyboard

Signature

FIXED

• Changing the size of the Signature by changing the size of the viewport leads to the misplacement of the stroke