Multisite impl of I18NAuthoringSupport unconditionally requires some node to be passed as a reference to determine the related website node, so that locales relevant to it are resolved.

However, in case of Vaadin 8 based UI framework modifications, components are a) JCR-agnostic and b) data binding is separated from UI, so it is hard to get an instance of a Node that e.g. a form operates on. For that purpose we introduced API version which take no arguments. For default case it works okay - there's only one website and everything is resolved fine. In multisite case, however, it breaks miserably with NPE''s.