Hi,
I have my fop2 in spanish and the phonebook is there. Maybe if you have a syntax error in the lang_es.js file or some kind of javascript issue, it may prevent the application for working correctly and create inconsistencies like you describe. But it does not happen on a regular install. Are you using fop2 2.11 ? You can try to catch me online to work it out as I might need to look at your web panel myself to catch the error.
Best regards,
