Pagination on lessons pages is not consistent.

[kimwhite]

Describe the bug
If Lessons are created "out of order" or rearranged, pagination does not appear to recognize the change.
The lessons display correctly on the course page, but the pagination at the bottom of the lesson is off or stops working.

To Reproduce
Steps to reproduce the behavior:

1. Create Course
2. Create Lessons
3. Attach Lessons to the course, but not in the order they were created
4. Go to a Lesson and follow Pagination Links.

Screenshots
https://capture.dropbox.com/IMVGtBBJbTp0FST2

Expected behavior
Pagination should match the Lesson order as set up on the Course Page.

Isolating the problem (mark completed items with an [x]):

• [ x] I have deactivated other plugins and confirmed this bug occurs when only Paid Memberships Pro plugin is active.
• [ x] This bug happens with a default WordPress theme active, or Memberlite.
• [ x] I can reproduce this bug consistently using the steps above.

WordPress Environment
WordPress 6.4.3
PMPro 3.0.1
Courses for Membership Add On - 1.2.5

[thesheryar]

I recently opened a WordPress thread as well. The workaround for me was to change the order of dates. I think the sorting of the pagination relies on the date.

https://wordpress.org/support/topic/bug-with-sorting-options-in-pmp-courses-w-memberlite-theme/

Let's say we have course "Dogs Training" with 3 lessons.

Lesson 1 date: 1 Jan, 2000 - 1:00 pm
Lesson 2 date: 2 Jan, 2000 - 1:00 pm
Lesson 3 date: 3 Jan, 2000 - 1:00 pm

If the dates are in proper order, the pagination would work just fine, but if the dates are something like this:

Lesson 1 date: 3 Jan, 2000 - 1:00 pm
Lesson 2 date: 4 Jan, 2000 - 1:00 pm
Lesson 3 date: 1 Jan, 2000 - 1:00 pm

It would messed up the pagination.