It is a great that a user can select his own language preference in Jomsocial. But there is a bug in how the localization is being used.

Say I register as an English speaking user. Irina registers as a Spanish speaking user. Then I am OK with her posting messages in Spanish. But I am not OK getting all status messages from jomsocial in Spanish.

I expect the emails and JS notifications to be in English, and not Spanish.

The way it is now, JS sends you the whole notification in the language of the user that caused the notification, and not in the language of the RECEIVING user - instead of receiving a notification that a (Spanish) user LIKED YOUR PHOTO, you get the whole notification in THEIR language, like:
----
Hola,
A Irina le gusta tu foto.
Puedes ver la foto en: <URL>
¡Que tengas un buen día!
----

This is wrong. You can also see from the attached image that the JS notifications appears in a mix of languages. Please have this language logic fixed.

HI, Andre.

This is actually Joomla! core issue.
Any messages are generated in authors language.
We can't skip that easily as we would need to develop our own system that handles language usage.
It was raised few times on forum.

You may start a conversation in our Community and tag Sinisa - he'll explain it with more details.