Jumpbox doesn't display in the login forum page (access to forum with password)

Consider a forum protected by a password (instead of a restricted permission access).

In prosilver, the login_forum.html (template file) ends like that...

<!-- INCLUDE jumpbox.html -->

<!-- INCLUDE overall_footer.html -->

Oddly, the jumpbox doesn't display (see the attachments). So, there is a little bug somewhere.