How to reproduce

• connect on CMS
• click on site map
• add a page
• add another page under the new one
• you can do it again as you want
  See the screenshot for example

Actual behavior
There is nothing ( - or +) to fold or unfold the tree composed by the new pages in the sitemap. Pages created before the addition of new pages have a + to unfold but not new pages.

Expected behavior
Something to fold and unfold new pages (and every kind of page).