Spanish, French and English words learned reset to 0 for some reason
I noticed it shortly after having messed around a bit with other language directions, although I don't know if that was the cause or just a coincidence. I don't remember exactly what I did but I believe at some point I ended up using different language directions at the same time in different tabs, which might be the culprit.
Update: After doing a practice lesson for Spanish, my Spanish word count is now back, though not French or English. I can fix that myself, but I'll leave this post here for bug reporting purposes.