What are text references and how to create them

Text references do not work for me!

In some documents there is an area at the bottom of the page that lists REM references. Below this list there is also the “text references” area. I suspect that these are (non-linked) mentions of the REM. You obviously get these text references only after clicking on “Search”. The problem is that I have never seen this feature working. Not even after I specifically tried to create such a text reference. What am I doing wrong?

References (graph view) do not work for me!

It’s also the case for me that when I select the “References” preset in Graph View, I don’t get any results. Is this a bug? Am I doing something wrong?