From what I’ve seen, that’s, surprisingly, not considered the Central Fountain. If you look at the preview picture on the map, the Central Fountain is considered the fountain that is indoors between the elevators to Tower Condos and Project12.
I believe this is Not A Bug™ but devs would have a better response than myself.
Center Fountain is the location name attributed to the fountain in the Main Plaza Square and it’s been like that since Lobby 3 released, as far as I know. The bug is that they lowered the fountain, but didn’t also extend the location volume down.