there's a new thing!
When you finish a lesson, there is a little thing with a tick. I like it!
I don't like ticks. They are nasty little spider-like creatures that live in bushes and grass and when they happen to fall on you they can cause you borreliose. They dig their heads into your skin and live on your blood. You must pull them out very carefully so the head comes out too. Then desinfect the place!
What, you haven't finished your French tree Miriam? :-)
I had recently seen another "new thing" (on the web):
An alternative answer was displayed in a 2nd solution text box (the one from the sentence discussion) when they were either accepting my own answer or showing the next 1st corrected answer (in red) for my Portuguese tree.
Now this NEW feature is gone again and did not popup anymore...
BTW: Are you using Camilo's powerful user script "DuoLingo tree enhancer" to activate French audio for multiple-choice answers and right hand side L2 target language translations?