It's not the name of the library that is displayed when passing the mouse on the map

On hea map, when there's several branches for a library, it's not the library's name that is displayed when you point the mouse over the blue pin. Instead, there's the name of the last branch of the library. For example, see the University libraries of Lyon 3, in France, "Service Central des acquisitions" is diplayed instead of "Bibliothèque université Lyon 3".