6.4.4 - 01.04.2026

What's New

• [Blocker]: added inset prop (BlockerInset: top, bottom, left, right in px) to control the blocker's coverage area.
• [Dropdown]: added fallbackPlacements prop to customize alternative placements when preferred placement doesn't fit
• [DropdownMenu]:
  • IDropdownMenuItemProps now extends IHasRawProps; use rawProps to pass any HTML attributes to the menu item element.
  • Menu arrow-key navigation now includes all roles starting with menuitem (e.g. menuitem, menuitemradio, menuitemcheckbox).
• [useVirtualList]: Added optional virtualRowInfo prop. When height is provided, skips getBoundingClientRect measurement; when gap is provided, uses it for vertical spacing between rows (flex/grid gap). Improves scroll performance on lists with uniform row sizing.
• [FiltersPanel]: Added support min/max/step props at numeric filter config (#3034)
• [Promo]: [IconButton]: add '18' size (#2943)
• [DataRowOptions]: Added reserveSpace property to checkbox configuration
  • When set and checkbox.isVisible is false, reserves space for the checkbox in the row
  • Automatically calculated for tree-like data structures to maintain consistent alignment

What's Fixed

• [DataPickerBody]: empty search results are announced via a polite off-screen role="status" region (#1506 Case №9)
• [VirtualList]: fixed loading Blocker not fully covering the visible area (#3064)
• [FiltersPanel]: fixed filters being centered instead of left-aligned inside dropdown popups (#3065)
• [DatePicker]: fixed value disappearing on blur when using formats with day name (e.g. dddd, D MMMM YYYY) (#2560)
• [TimePicker]: fixed inconsistent time format between input field and dropdown - both now display hours and minutes with leading zeros (e.g., 01:00 AM) (#2910)
• [uui-core]: fix double decoding in searchToQuery helper (#3058).
• [Dropdown]: fixed stale closure in onClose and onValueChange callbacks (#3011)
• [VerticalTabButton]: added aria-selected attribute so screen readers announce the selected tab state (#2742)
• [DropdownMenuSwitchButton]: prevent calling onValueChange multiple times on Switch click (#3045)
• [Dropdown]: fixed unexpected placement change from top/bottom to left/right when content doesn't fit the available space. Affects Tooltip, DatePicker, PickerInput, and other components built on Dropdown (#3016)
• [SortingPanel]: Sort options in the column header dropdown are exposed as role="menuitemradio" with aria-checked, so screen readers announce the selected sort direction (#2992 Case 2).
• [DataTable]:
  • Table accepts rawProps for additional ARIA/HTML attributes (e.g. aria-label for table name); role, aria-colcount, and aria-rowcount remain controlled by the component. (#2992 Case 3)
  • Fixed Property Explorer by providing values for properties that are not automatically resolved (#2832)
  • Fixed tree table indentation when child rows have no checkbox: child rows now reserve consistent checkbox space for alignment (#2844)
• [Tooltip]: fixed tooltip not showing on keyboard focus for complex elements with focusable children (e.g. Switch) (#2959)