Does not work. Puntuado con 1 de 5 estrellas

Maybe it is a faut of another extension: After the Deadline. But I tried few times on different websites and it just does not work. Only wants to spell in default language. And, yes, I have two dictionaries installed.

Esta valoración es de una versión anterior del complemento (0.1). 

In 0.1 there was a problem recognizing all the installed dictionaries. That's probably the reason why it would always jump back to the default language. Feel free to give it another try now.