Thanks for solving this
Thanks for the tip. Of all the database names to choose from, I had
to be lucky enough to choose a default hide-db name like "db_test".
I have since created another database with a more 'unique' database name (i.e. something without the word 'test' or 'mysql' etc.) in it. And ... now all
is well and working. Now the database with a new name is no longer hidden.