See for example the following pages where the header contains the value of rico:identifier property: http://51.159.140.210/lodview/place/FRAN_RI_025-d3nz9op4hb--141k4nw8fz536.html or http://51.159.140.210/lodview/place/FRAN_RI_021-d3nyv5jo07--11vv6ggdeixfq.html. While this page: http://51.159.140.210/lodview/occupationType/FRAN_RI_010-d699msizu7v--40vdsgsdg0bg.html is correct.
This issue was fixed a few months ago (before June 2022 I think). Maybe the demonstrator uses an old version of the Lodview config.