Perhaps this is expected behavior but to me it seems strange: I will advance in level once new lessons are “unlocked” but not before they are reviewed.
This results in advancing in level before clearing the previous level’s items to review. Meaning I can have 160 lessons in the qeue, not have studied all lessons for the current level, but the system bumping me to the next level.
I feel like a cheat, advancing without actually earning it.
Preferred behavior: advance in level once all lessons are reviewed for that level. Unlocking doesn’t do anything to my current level status.