Another error, though a bit different from the previous 2 I had with the Global search...
When I look for :
(in the Global search)
I find no result at all for Moodle in English.
(though there are several English language messages in the forum talking about : "prison"...)
If I look at the choice "Everywhere [i] have access to", this leads to a unique result :
(only 1 result,
actually there are more than 30 right now : https://moodle.org/mod/forum/search.php?id=20&search=prison )
Maybe the search index needs to be rebuilt / the database need to be checked ?