I figured out why you and I are getting different results. It has nothing to do with cache (I’ve cleared that previously to no avail).
It turns out that the lessons I can’t delete come from my imports. I can’t delete those lessons whether I am at the “My Lessons” list or at the “My Imports” list.
So the failure to delete lessons that remains applies to lessons originating as imports. I can now delete lessons that did not originate as imports, so something did get fixed.
Please take at look at my Latin lessons, since that’s where I’ve been struggling.
I named the lesson “Want to delete this lesson” and the imported course is named “cant delete this”.