How to reproduce:

• Add the Maps service to a zone item
• In the configuration form, move the map to change it center
• Valid the service's configuration
• The Map is displayed in the zone item but its center is at the 0.0/0.0 geographic coordinates => KO

In the repository, the center coordinates values always are 0.0, the issues seems to be in the ConfigurableFormPanel that does not store the good center