The decimal.MinValue is displayed when e negative value is pasted in RadMaskedCurrencyInput when the maskedInput:MaskedInputExtensions.Minimum attached property is set to 0, and the current Value is null.

To work this around, you can override the HandlePaste method of the masked input control.

public class CustomMaskedCurrencyInput : RadMaskedCurrencyInput
{
	protected override void HandlePaste()
	{
		object clipBoardValue = Clipboard.GetText();
		if (clipboardValue can be parsed to a number and it is a negative number)
		{
			// don't call the base method
		}
		else 
		{
			base.HandlePaste();
		}
	}
}

KeyNotFoundException is thrown when the LayoutControl is deserialized and the serialization string contains a LayoutControlTabGroupItem.

You can try to work this around by using the RadPersistenceFramework.

If a formula contains a named range as an argument, its value may not get updated properly in the following scenario:

In the formula: =SUMIF(A1:A4, 3, ColumnC), ColumnC is a named range refering to C1:C4. Range A1:A4 contains the values 3, 2, 2, 3, which will avoid a circular reference. The formula is entered twice, in C2 and C3. Note that these cells are part of the range ColumnC refers to. When you refresh the formula in C3 (enter edit mode, then press enter), it will calculate correctly, but the formula in C2 will be recalculated to an error. If you refresh the formula in C2, the formula in C3 will be evaluated to an error.

Currently, the GridViewMergedCell cannot be selected. Allow selecting the merged cells via the UI or code. 

At the moment RadGridView has only a CurrentMergedCell property.

In the following scenario:

<telerik:RadGridView x:Name="clubsGrid" ItemsSource="{Binding Foos}" AutoGenerateColumns="False">
	<telerik:RadGridView.Columns>
		<telerik:GridViewDataColumn DataMemberBinding="{Binding Foo1}" MinWidth="100" />
		<telerik:GridViewDataColumn DataMemberBinding="{Binding Foo2}" MinWidth="100" />
		<telerik:GridViewDataColumn DataMemberBinding="{Binding Foo3}" Width="*" />
		<telerik:GridViewDataColumn DataMemberBinding="{Binding Foo4}" MinWidth="100" />
		<telerik:GridViewDataColumn DataMemberBinding="{Binding Foo5}" MinWidth="100" />
		<telerik:GridViewDataColumn DataMemberBinding="{Binding Foo6}" MinWidth="100" />
	</telerik:RadGridView.Columns>
</telerik:RadGridView>

<DataGrid ItemsSource="{Binding Foos}" AutoGenerateColumns="False" Grid.Row="1">
	<DataGrid.Columns>
		<DataGridTextColumn Binding="{Binding Foo1}" MinWidth="100" />
		<DataGridTextColumn Binding="{Binding Foo2}" MinWidth="100" />
		<DataGridTextColumn Binding="{Binding Foo3}" Width="*" />
		<DataGridTextColumn Binding="{Binding Foo4}" MinWidth="100" />
		<DataGridTextColumn Binding="{Binding Foo5}" MinWidth="100" />
		<DataGridTextColumn Binding="{Binding Foo6}" MinWidth="100" />
	</DataGrid.Columns>
</DataGrid>

in the native DataGrid after the Width of Foo4 column is increased towards Foo3, then the Width of Foo5/Foo6 columns can also be increased. We can implement similar behavior in the RadGridView as well. 

I use RadWindow as the main window for my application (primarily because I want to embed a menu in the title bar).  This works well except our users have reported a bug where they are unable to use hotkeys following activating the application from the TaskBar.

A typical scenario:

* minimise the application using the minimise button

* some time later, activate the app by clicking on the TaskBar icon

* Press CTRL+N hotkey combination which should execute a command

I have created a sample application that shows two windows: a regular Window and a RadWindow.  They both contain input bindings for the Ctrl+N combination.  When the regular window is activated from the taskbar, the input bindings work, but when the same sequence of events is performed on the RadWindow the input bindings do not work.  Clicking between the windows does work - it seems the problem is only related to application activation.

On a related note, both windows contain a TextBox control.  If text is highlighted in the regular window, the highlighted text is maintained and redisplayed when the window is activated.  This does not work for the RadWindow.  As it relates to keyboard focus, I wonder if the problem is related.