Course's tracking

Goodmorning everyone,

our team has a problem with a course's tracking, realised in Rise 360. Restrict Navigation is On in this course.
Here's what's happening. The course's tracking works well only if learners don't close course's window till the end of the entire content.
Instead, the course's tracking doesn't work well when learners close course's window and launch the SCORM again in an other moment. In this case, it happens that:
- firstly, the course maintains the progress status up only to a certain lesson (32% of tracking);
- secondly, the course sends learners to their last lesson studied before closing window's course BUT it doesn't sign as studied the previous lessons up to that moment ... For this reason, learners can't go on or back to the next/previous lesson, because the Restrict Navigation is On. So, they must go back to the lesson at 32% of tracking and they must study again lessons till the lesson viewed before closing course's window. Only by this way it's possible to go on.
Unfortunatly, the course must keep on the Restrict Navigation, as client required.
I'm attacching screenshot of demonstration.
Which could be the problem?

Best regards,
Angela