Using latest version of UI for WPF R2 2020 SP.
I have a RadRichTextBox and RadRichTextBoxRibbonUI on a user control.
All of the buttons on the ribbon view are synced with the selected text on the rich text box, other than font size. Note that if I highlight text and select a new font size, it works as expected, except that the newly selected size is not displayed in the ribbon view (the combobox is empty after the selection).
Snippet of code attached to show that the Command binding is set correctly, or so I believe.
Any help greatly appreciated.
<telerik:RadRichTextBoxRibbonUI CollapseThresholdSize="50,50" VerticalAlignment="Top" DataContext="{Binding Commands, ElementName=radRichTextBox}" ApplicationButtonContent="File">
.....
</telerik:RadRichTextBoxRibbonUI>
<telerik:DocumentRuler Grid.Row="1">
<telerik:RadRichTextBox Name="radRichTextBox" LayoutMode="Paged" />
</telerik:DocumentRuler>
<telerik:RadRichTextBoxStatusBar Grid.Row="2" AssociatedRichTextBox="{Binding ElementName=radRichTextBox, Mode=OneTime}" />