This seems like a bug to me
I'm doing the course French for Spanish speakers. When looking at the main page, the lesson 'animales' seems uncompleted:
However, when visiting that lesson, it is clear that I completed all four of them:
And it stays that way even when switching back and forth between "Inicio" and the lesson 'animales'.
Edit: This bug just resolved itself after refreshing yet another time. Maybe the problem was that clicking "Inicio" doesn't actually refresh the page, but relies on a cached result or something like that.
Editar2: No supo que este Foro fui localizado por idioma. Lo siento por escribir en inglés aqui.