Release History

Telerik® UI for Blazor 15.1.0

October 14, 2026

Common

NEW

• Floating ToolBar component
• Migrate to kendo icons 4.12.0
• Add Variant parameter to all components that have Icon and IconField parameter

FIXED

• Sanitize html rendering

Dependencies

• Update Document Processing Library (DPL) version to 2026.3.923
• Supports Bootstrap theme version 14.6.1
• Supports Classic theme version 14.6.1
• Supports Default theme version 14.6.1
• Supports Fluent theme version 14.6.1
• Supports Material theme version 14.6.1
• Supports Meridian theme version 14.6.1

Calendar

FIXED

• Do not mark empty cells with the today CSS class

ColorPalette

FIXED

• Fix colorpalette not removing k-selected class from tiles

ColorPickers

FIXED

• Fix focus not moving to selected tile

ComboBox

FIXED

• Highlighted item is not selected when tabbing out of the input

DateInput

FIXED

• Incorrect value with higher latency

DropDownList

FIXED

• Alt+Down scrolling page on macOS
• Upon data change reset the scrollbar of the items list

DropDownTree

FIXED

• Filter input does not recieve focus after opening the popup

Dropdowns

FIXED

• Remove aria-polite attribute from dropdown components popup ul element

Editor

FIXED

• Support inserting multiple HTML elements
• Preserve consistent whitespace handling for delayed values
• Improve link URL scheme validation
• Disable table resizing in read-only mode
• Sanitize webmcp set value command
• Tools button state should be synced with the content format

Filemanager

FIXED

• Await download delivery
• Guard hierarchical item lookup
• File not visualized by the FileManager when bound to hierarchical data

Gantt

FIXED

• Preserve TreeList header scroll synchronization
• Task edit form is not fully visible on mobile devices
• Dbl click on task does not open the edit form on mobile devices
• Timeline header don't scroll with content

Grid

FIXED

• Escape clear value in EditorTemplate with ComboBox or
• Header cell does not receives focus when the Sortable parameter is set to false
• Vulnerability: CSV exports now prefix formula-like text values with an apostrophe. Consumers relying on raw CSV values must account for this change.

Icon

FIXED

• Resolve icon service without throwing in lazy-loaded assemblies

InlineAiprompt

FIXED

• Align Enter submit with send-button gating

ListView

FIXED

• Dispose JS interop reference on teardown
• Set correct aria-posinset and aria-setsize attributes when adding a new item

MultiSelect

FIXED

• Do not render aria-controls attribute if data is null

PivotGrid

FIXED

• PivotGrid rows field order in the table does not match the field order in the configurator
• Selected fields get unchecked after clicking apply button

Promptbox

NEW

• Expose text customization for the action button

Scheduler

FIXED

• Remove appointment focus upon data processing if appointment is not present
• Scheduler should not throw when grouped by resource and items per slot different from default
• Add default max width to dialogs to ensure visible on all mobile devices
• Handle double tap editing on mobile devices

Smartbox

FIXED

• Align Enter submit with button gating

Spreadsheet

FIXED

• Restore HtmlStringRenderer sanitization in SpreadsheetErrorDialog

TabStrip

FIXED

• Switching tabs with the keyboard does not fire OnStateChanged

Taskboard

FIXED

• Preserve original column on canceled update

TimePicker

FIXED

• Adaptive TimePicker resets its carousels values