Telerik UI for ASP.NET AJAX 2025.4.1210
December 10, 2025
What's New
NEW- Introduced keyboard support for MediaPlayer and SiteMap.
AsyncUpload
FIXED- InputSize in RadAsyncUpload does not work in Lightweight.
Editor
NEW- Localization support for track changes and comments tools and dialogs.
- Find functionality now highlights the word in RadEditor HTML mode.
- Enable accessible labels (aria-label) for RadEditor toolbar buttons.
- StripJavaScriptUris filter incorrectly strips base64-encoded image data URIs.
- CommandExecuted event fires twice for ToggleScreenMode command in mobile render mode.
- Undo operation requires pressing Ctrl+Z twice after switching modes.
- Uncaught TypeError: Failed to execute 'setStart' on 'Range': parameter 1 is not of type 'Node'.
Grid
FIXED- AXE DevTools reports accessibility errors: "Ensure elements that have scrollable content are accessible by keyboard".
- AXE DevTools reports accessibility errors: "Certain ARIA rules contain particular children".
- ElasticButton.SecondSpanClass being ignored when set in ItemDataBound/ItemCreated.
MediaPlayer
NEW- Added keyboard support.
SiteMap
NEW- Added keyboard support with arrow keys and tab.
Switch
FIXED- Switch with Bootstrap skin is barely visible in Off state and missing border in On state.
Scheduler
FIXED- Recurrence Editor 'Recur every' label is duplicated.
New features & Roadmap
Have a feature request?
Post your feedback via the ASP.NET AJAX Feedback Portal.
What's new across all Telerik products?
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Next Steps
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