In specific conditions, when selecting text through the document, NullReferenceException is thrown in RectPathBuilder class.

Hello,

   We found a problem when using the radrichtextbox control. When radrichtextbox is enabled to cancel input, error will be reported using the sougou Chinese input method. This problem will not occur in the English input method. Please help solve it. Thank you very much.

The DeepCopy method does not copy the font of the predefined table styles

Workaround:

var fragment = new DocumentFragment(radRichTextBox.Document);
radRichTextBox.Document = new RadDocument();
DefaultStyleSheet.Instance.ApplyStylesheetToDocument(radRichTextBox.Document);
radRichTextBox.InsertFragment(fragment);

Numbered lists have invalid values when combining documents by using the InsertFragment method.

Workaround: use RadDocumentMerger:

RadDocument radDocument1 = RtfSourceProvider.Import(rtf1);
RadDocument radDocument2 = RtfSourceProvider.Import(rtf2);

AppendDocumentOptions options = new AppendDocumentOptions();
options.FirstSourceSectionPropertiesResolutionMode = SectionPropertiesResolutionMode.NoSectionBreak;

RadDocumentMerger merger = new RadDocumentMerger(radDocument1);
merger.AppendDocument(radDocument2, options);

RichText.Document = merger.Document;

The paste options popup stays visible when the window is deactivated

Workaround: 

After deleting a custom annotation using the DeleteAnnotationRange method when there is a text immediately in front of the annotation start:

and then trying to delete the last character in this former annotation range an exception is thrown (Exception: System.InvalidOperationException: 'inline does not belong to this document.')