I have the following sitemap structure :
Sitemap
|_index
|_page1
_|_page2
__|_page3
__|_page4
__|_page5

I'm on the frontedition of page2

In /skins/demo/stylesheets/menus.xsl, I added a call to ametys-front-edition-insert-move-page-button with different values for page-new-pos :

1. if -1, then it fails to move as last child for page3, page4, page5 (see org.ametys.web.repository.page.PageDAO.movePage(String, String, int) javadoc) KO
2. if 0, then it works for page3, page4, page5 OK
3. if 1, then it works for page4, page5, but it fails for page3
4. if 2, then it works for page5, it fails for page3, page4