Does someone else have the feeling like Duolingo sometimes updates the course-order and while you get newly sorted in there is some surprise new vocabulary you did not learn before? I am doing Duo for a year and a half, in this time they did some major changes in their Design and learning scheme. So maybe I am just bad at Vocabulary but this really stuck out to me.
Same. Now many lessons consist of one or two words which i already learned and I am placed so much backwards when i finally returned back to japanese again.