We're running Commerce 9.6 site with Find version 10.0.0.3291 and we're facing an issue with Related queries described in this post from 2014: https://world.episerver.com/Modules/Forum/Pages/Thread.aspx?id=91180

When we're trying to use the REST API for related queries described here:
https://world.episerver.com/documentation/Items/Developers-Guide/EPiServer-Find/10/search-statistics/introduction-to-search-statistics/

we only get hits for editorial content, as in manually added suggestions. Our statistics tracking is on and I can see these kinds of reports from the Find UI:

But when I do a query to https://ourdomain/find_v2/_didyoumean?query=vaihteistonostin&size=1 I get this as a result:

{
   "status":"ok",
   "hits":[
      {
         "suggestion":"nostin",
         "type":"editorial"
      }
   ]
}

So for some reason, the automatic "vaihteisto" suggestion is not returned as a related query. Is there a missing configuration or something similar that's preventing the dynamic suggestions from getting returned?