Created Improvements in v5.1.0 (markdown)

Improvements-in-v5.1.0.md

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+## <a id="Community510"></a>v5.1.0
+
+_Released June 11 2026._
+
+**12 bug fixes and improvements**
+
+* A new class, called AppearanceProperties, can now be used to set the Radius, Margin, Foreground & FontWeight properties for controls without those base properties.
+* A new converter class, called CornerRadiusReplacementConverter, is now used to adapt the radius converter according to the radius of the parent element.
+* The obsolete MaskedTextBox control found in the Xceed.Wpf.Toolkit.Obselete namespace has been removed; users should use the MaskedTextBox found in the Xceed.Wpf.Toolkit namespace instead.
+* The text within a watermark will now be correctly aligned inside the control.
+* In AvalonDock, loading an app that has FloatingWindows containing LayoutAnchorables will no longer double the header of said windows automatically.
+* In DateTimePicker & DateTimeUpDown, trailing zeros are no longer added to ms values that have less than 3 digits when focus is lost.
+* In PropretyGrid, updating the content of the collection from a Collection PropertyItem will now properly validate and then correctly display the red border associated with said validation when necessary. 
+* In DateTimePicker, a new property, called AutoCloseCalendarOnTodayButton, can now be used to get or set if the calendar popup closes automatically when a user clicks on the Today button.
+* In ChildWindow, the other non-modal ChildWindow will now become inactive when a new Modal ChildWindow is added.
+* In PropertyGrid, the initial object’s properties will no longer be reset to its default values when using a collection of T, where T is a derived class, and clicking the Cancel button while editing a property.
+* In RichTextBox , special characters & symbols, such as Ø, will now be rendered correctly.
+* The title of the floating window’s taskbar now updates correctly when the LayoutContent’s title changes.
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+We hope you love this release and decide to support the project by getting a license to Xceed Toolkit Plus for WPF.
+-- Xceed Team
+
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