enclosures on nested components within wicket:extends

Since 1.3.0-final the "hidden feature" of addressing components within an enclosure by writing the path into the child attribute (e.g. child="container:list") is not supported anymore if they occur within wicket:extend tags. For further information, take a look at the mailinglist: http://www.nabble.com/enclosures-on-nested-components-within-wicket%3Aextends-to15330837.html#a15330837
and/or at the attached quickstart