It has been a while … but now there is a new release of the Publication Workflow Extension.
The main purpose of the release is to be compatible with the nested pages that are around since XWiki 7.2. It also contains a new UI improvements, like you do not have to type in the page name for the published page in the workflow panel if it should be the same name as the one of the draft page.
A list of all resolved issues can be found here: http://extensions.xwiki.org/xwiki/bin/view/Extension/XWiki%20Publication%20Workflow%20Application#Hv1.8