When the LayoutMode is set to Flow the size of the numbers is larger than expected.

This behavior is not observed in LayoutMode="Paged".

Appling the following command changing the margin but doesn't change the position of the DocumentRuler:

this.radRichTextBox.ActiveDocumentEditor.ChangeSectionPageMargin(new Padding((int)Unit.InchToDip(3.0)));

The result:

MethodInfo method = typeof(RadRichTextBoxRulerController).GetMethod("OnSeparatorsChanged", BindingFlags.NonPublic | BindingFlags.Instance);
method.Invoke(this.ruler.Controller, null);

<telerik:DocumentRuler x:Name="ruler">

Dear all,

Exporting partially-selected annotation ranges (annotation markers around selection or only one annotation marker in the selection) with a DocumentFragment from a RadDocument does not seem possible (the DocumentFragment contains none of these annotation ranges).

For example, if I have a document ("[", "]" are the annotation markers):

"Test [annotated]",

select "Test [ann" and create a DocumentFragment, the Document fragment will contain "Test ann" and not "Test [ann]".

PS.: I am not sure if this falls into the feature request or bug report area.

The RtfFormatProvider does not take the fonts from the Font.Manager

Workaround: 

Unregister all custom fonts and the use the FontSubstituting event to supply the correct fonts:

private void ImportSettings_FontSubstituting(object sender, Telerik.Windows.Documents.FormatProviders.FontSubstitutingEventArgs e)
{
    var fonts = Wpf.Fonts.Fonts.GetAllAvailableFonts();
    var ff = fonts.Where(x => x.Source == e.OriginalFontName).FirstOrDefault();
    e.SubstitutionFontFamily = ff; 

}

After the import is complete you can register the fonts again.