RadParagraphPropertiesDialog throws NullReferenceException when paragraphs with different type of indent (hanging + first line) are selected, and then alignment is applied through the dialog. Steps to reproduce: Variant 1: - Insert three paragraphs (press Enter two times in a blank document). - Using the document ruler (do not use the RadParagraphProperties dialog), modify first line indent on the first paragraph to some value, and handing indent of the second to some value. - Select the two paragraphs and open Paragraph Properties dialog. (Note: can be reproduced more easily on first opening of the dialog). - Change Indentation -> Left: value to 6 pt. - Press OK. NullReferenceException is thrown. Available in LIB Version 2017.3.1023.