Bug: Can skip topics
There is a bug when you can skip courses. For example, when you do an exercise, the link is https://www.duolingo.com/skill/fr/Basics-2/4 or something like that. If you replace Basics-2 with the other topic and the 4 with the lesson number, then you skip to that topic! For example, if you have https://www.duolingo.com/skill/fr/Sports/2, it will direct you to the second lesson of Sports, even if you haven't unlocked it yet. A picture would be nice in this post, but sadly I don't know how to :(. Hope this issue gets fixed soon! Danke! Merci!
This has been around and known about since I started on DL. I don't think correcting it is a priority.
to post pictures, type
First, take a screenshot, save in photo editing software (MS Paint will do), upload to i.imgur.com, put that website in the code above.