Also a big fan of the RadRichTextBox, but also having some issues with Bullets and Numbered Lists.
When the user highlights a few lines, then click on the RadRichTextBoxRibbonUI button to make it a Bullet (or a Numbered List), the RadRichTextBox does the right thing - it displays the highlighted lines with the appropriate bullets or numbers. However, when I look at the serialized XAML (using your XAML FormatProvider), the Bullets or Numbered List instruction is not present in the XAML. Obviously this means that when the application stores the XAML, and later retrieves it and displays it, the user now complains that their formatting (bullets / numbered lists) is gone.
[Edit] - Further testing showed that if the user formats a few lines as Bullets / Numbered Lists, and then makes _further_ changes to other
parts of the document, then everything works as it should... The problem only occurs if the few lines are formatted as Bullets / Numbered Items, and then exported to xaml immediately afterwards.
I've tested the rest of the formatting (fonts, sizes, alignments, colours, tables, images, etc), and everything serializes correctly - the only problem is the Bullets and Numbered Lists...
I'm currently using:
Assembly Telerik.Windows.Controls.RichTextBoxUI, Version 2010.3.1129.1040
Assembly Telerik.Windows.Documents, Version 2010.3.1129.1040
Assembly Telerik.Windows.Documents.FormatProviders.Xaml, Version 2010.3.1129.1040
-Louis de Klerk