Hm... this is somewhat of a déjà vu... from years ago when I was just starting with Moodle... and so happened to have the knack for landing on problems that were to remain unsolved...
https://moodle.org/mod/forum/discuss.php?d=160153
https://moodle.org/mod/forum/discuss.php?d=161569
https://moodle.org/mod/forum/discuss.php?d=163072
https://moodle.org/mod/forum/discuss.php?d=171081
and this is how I ended-up becoming a Particularly Helpful Moodler
Yes, this plugin would have been an useful addition to my site, but well, the issue is not really critical at all, so I'll just do without it.