So, I like to review lessons regularly and I have noticed over the past few days that I am getting the same lessons (the same sentences and in the same order) over and over.
I haven't been getting the answers wrong, so I don't see why they are repeating.
I have also noticed that the number of questions per lesson has dropped significantly. A few days ago, I would need to answer a minimum of 17 questions before the lesson ended. Now, I am only being given 7 questions.
Is this an A/B test, or a glitch or have I accidentally changed some settings?...
I'm not sure what's causing the decrease in number of questions, but yes, reviewing lessons does cause all sentences/words in a lesson to be repeated, so it isn't too surprising that you'd be seeing those that you've done before, even if you got them right.