Anyone else notice?

I’ve noticed this happening over and over again, and I’m wondering if for anyone else, after finishing a unit, do some of the lessons sporadically become “undone” and you’re no longer at 100% complete for certain lessons? It’s not the biggest deal, I’m just curious if there’s a mechanism that randomly uncompletes a few lessons to keep you on your toes.

Changes have been made recently to the curriculum in order to better serve the needs of the freeCodeCamp community.

The lessons and project steps which have been added or substantively changed will not be marked as “completed”, which can impact your reported course competion percentage. This will not impact claimed certificates. If you have already completed a project, then you are not required to complete the new steps. Any lessons which are not part of a certification project are always optional.

Only the 5 certification projects count towards the certificate.