The AddParagraphToSelection method adds the first row of a table when it is the element after the paragraph.
To workaround this manually select the paragraph:
var para = caret.GetCurrentParagraph(); DocumentPosition pos = new DocumentPosition(doc); pos.MoveToDocumentElementStart(para); selection.AddSelectionStart(pos); pos.MoveToDocumentElementEnd(para); selection.AddSelectionEnd(pos); this.radRichTextBox.Delete(false);