It may seem like a bug, but if they create the artwork, give you a button and write up the civtext, it is deliberate and not a bug.
Look, if you want to use it, go ahead. If you want to cheat and give yourself 10000 gold, go ahead too. But sitting here arguing it's not a bug is just stupid. Between this only working under specific conditions, and directly contradicting the UA of Venice, I don't know how any reasonable person could think this was intended.