Released: Nov 6, 2025

Updates in 25.1.2

Features

Bars

• Added RibbonViewModel.SelectedItem property for the currently selected RibbonTabViewModel.
• Added an InvocationFocusBehavior property to most bar controls that determines how focus should be handled following the primary invocation of the control.
• Added DockableToolBarSerializerOptions.IsVisible flag to serializer/deserialize dockable toolbar visibility with layouts.
• Improved RibbonGallery keyboard navigation to better match Office behavior.
• Updated the DockableToolBarHost.MenuOpening event to be raised when opening the options menu of a floating DockableToolBar.
• Updated RibbonBackstageTabViewModel so the Content property will default to itself. This improves the default experience of configuring data templates for each tab and makes it easier to see when a data template is not currently configured.

Docking

• Updated the DockSite.DocumentItemsSource and ToolItemsSource properties to use weak event handlers for INotifyCollectionChanged.CollectionChanged events.
• Updated StandardSwitcher item focus logic to work around a possible problem with DataGrid, when hosted within docking windows.

Editors

• Added a CanSwatchStretch property to the ColorEditbox and BrushEditBox controls, which determines if the swatch stretches horizontally when the HasText property is false.
• Updated EnumEditBox, EnumPicker, and EnumListBox to have optional support for picking null as a value via new IsNullAllowed properties, useful when a nullable enumeration property is bound to the control's value to indicate a not-set state.
• Added NullValueText properties to EnumEditBox, EnumPicker, and EnumListBox, which allows the picker text representing a null value to be altered.

Themes

• Updated the native ComboBoxItem template to better differentiate between selected and hover states.
• Updated the native ComboBox styles to properly clip drop-down button glyphs.

Shared

• Improved the crispness of rendered rectangles.

Fixes

Bars

• Fixed an issue introduced in the previous build where XAML-defined ribbon gallery popups didn't render the implicit menu gallery correctly.
• Fixed an issue where galleries would incorrectly call the Execute method for preview events when RoutedCommand-based commands were used.
• Fixed an issue where in-ribbon galleries that were updated when their parent tab was not selected may not invalidate measurement.
• Fixed an issue restoring the location of a floating DockableToolBar in certain mixed DPI environments.
• Fixed an issue dragging a floating DockableToolBar in certain mixed DPI environments where the initial floating location would shift on mouse down.

Docking

• Fixed an issue introduced in a previous build where dragging to float a docked window may not retain a similar size.
• Fixed an issue where dragging to float a docked window in a non-native WPF application context (e.g. MFC hosted) would not apply the proper DPI scale.
• Fixed an issue where non-live splitters in a non-native WPF application context (e.g. MFC hosted) would not apply the proper DPI scale.

Shared

• Fixed an issue where UserPromptBuilder would not properly size a user prompt if the startup location was configured as CenterOwner and the owner could not be resolved.
• Fixed an issue where an exception might be thrown when attempting to set UserPromptWindow.Title if the title could not be resolved.