Endless loop on lessons

When I am doing a lesson the automatic switch to the next lesson seems to work no longer.

Whenever I finish a lesson, the next one is "checkmate in 3 moves" even if I finish "checkmate in 3 " or manually select another lesson. Because if I finish it, the next one is again "checkmate in 3".

Does this happen to anyone else?

Hello,
It sounds like you’re experiencing a bug in the lesson progression system—specifically, the automatic advance feature seems stuck on “Checkmate in 3 moves.” This isn’t normal behavior. Normally, completing a lesson should move you to the next one in the course sequence.
TollsByMailNY

This is a known issue happening to some of the members. For the time being, would you mind trying to navigate your studies using the Lesson Library?

It is good the topic is already known. Until it is fixed, I will use the library.