Overall progress under LifterLMS > Reporting is not cleared

[brianhogg]

Reproduction Steps

1. Enroll a student in a course with multiple lessons
2. Complete one of the lessons as the student
3. Visit LifterLMS > Reporting to see progress
4. Complete another lesson as the student
5. Visit LifterLMS > Reporting

Expected Behavior

Progress is updated

Actual Behavior

Progress percentage remains the same

This issue has be recreated:

• Locally
• On a staging site
• On a production website
• With only LifterLMS and a default theme

[brianhogg]

This is a known issue from this doc/blog.

We'd want to be careful about clearing the cache too often since it's a heavy process to update the overall progress on a large site. Clearing an individual student's progress cache when a lesson or course is completed seems reasonable. At the very least showing a helpful message about clearing the cache from the reporting screen.