Release History

Telerik® UI for Blazor 13.1.0

March 25, 2026

Common

Dependencies

• Supports Bootstrap theme version 13.1.1
• Supports Classic theme version 13.1.1
• Supports Default theme version 13.1.1
• Supports Fluent theme version 13.1.1
• Supports Material theme version 13.1.1

Chat

FIXED

• Throws exception when sending a message with no OnSendMessage handler
• ChatSpeechToTextButtonSettings and ChatFileSelectSettings Rounded parameter should be Full by default

ComboBox

FIXED

• Fix dropdown focus logic when filter matches non-TextField items
• Null TextField value displays model class name in the UI

DropDownList

FIXED

• Add null guard in SelectItem to prevent InvalidCastException
• Does not preserve DateTime/TimeSpan ms precision
• Null TextField value displays model class name in the UI

DropDownTree

FIXED

• Initial Value does not show if Data is loaded asynchronously
• ClearButton does not clear underlying value

Editor

FIXED

• Sanitize html from insertHtml command

Filter

FIXED

• Removing group or expression does not refresh UI

Grid

FIXED

• Clicking below rows does not close the cell edit
• Smartbox is not shown after input blur
• FormatException when dropping in empty Grid in RTL mode
• JSDisconnectedException when browser tab or window is closed
• SelectionMarquee leaks in memory

InlineAiPrompt

FIXED

• Popup shadows are missing
• Enter should trigger OnPromptRequest

MultiColumnComboBox

FIXED

• Filter textbox in adaptive ActionSheet resets value during typing

MultiSelect

FIXED

• Fix dropdown focus logic when filter matches non-TextField items

PromptBox

FIXED

• Missing shadow in the start of the file attachment list
• When IsLoading is true, Action button icon should be animated
• PromptBoxSpeechToTextButtonSettings default Rounded should be Full, default ThemeColor should be null
• PromptBoxActionButtonSettings default FillMode should be null, default ThemeColor should be null

Scheduler

FIXED

• View dropdown in toolbar disappears on very narrow screens

Switch

FIXED

• Handle Enter key press to submit the containing form

TabStrip

NEW

• Add tabs drag reorder functionality
• Add closeable parameter to tabs
• Add tabs overflow modes
• Add pinnable and pinned parameters to tabs
• Add OnStateInit and OnStateChanged events
• Add GetState and SetState methods for state management
• Add Refresh method to force UI update and overflow recalculation
• Add TabStripSuffixTemplate parameter

TileLayout

FIXED

• Keyboard navigation ignores Reorderable and Resizable values
• Keyboard reordering may cause negative order index
• Keyboard resizing may cause negative colspan
• Keyboard resizing doesn't work on Mac

Tooltip

FIXED

• Error isParent is not a function when using adaptive dropdowns

TreeView

FIXED

• Incorrect selection when toggling a node's checkbox