Is it just me or is it more difficult now to discern whether you have already completed a lesson or not?
If you mean units (topics), you can easily tell if you have completed it: completed units have a cup in upper right corner.
Ah yes, exactly, but to master it again and turn it back to gold, it's a little less clear which lessons I have to do over again. I presume all of them without some indication otherwise.
You have to redo the lessons that have less than full word strength bar. In fact, the word strength of the whole unit is about the average word strength of the lessons within. Sometimes it is enough to brush up on one lesson to make the whole unit golden again.
"Practice skill" usually helps, too, but sometimes the individual lessons remain with weakened bar even after that.
Well, that makes perfect sense, and I suppose language learning is never really done, is it? Spasibo, Olga, for your kind explanation of the changes in format.