I think there is a problem with a specific Unity tutorial on the learn platform.
I am in Pathway → Unity Essentials → Mission 2 - 3D Essentials → Tutorial Adjust the lights, background, and camera angle (Adjust the lights, background, and camera angle - Unity Learn) using version for Unity 6.
Going through and marking all sections complete, and clicking the “Continue to next time” at the end, just brings you back to the same tutorial and it is not marked green or complete.
There are a lot of comments with exactly the same experience on this specific tutorial so I think this is a bug and not something we are doing.