Moodle 3.10, Boost theme.
I feel certain I have self enrollment set up right.
As admin, I go to the course: Participants > Enrollment methods
Self enrollment (Student) is at the top of the list and enabled.
I logout as admin, go to the front page, and there is no icon next to the course title. When I click on the course link, it goes directly to login.
If I login as admin, and go to the front page, I will see the icon next to the course title.
Note how the top course has that unopened lock icon on the far right? But the bottom course has no icon? Also, note the enrollment settings below.
BTW: is "enrollment" spelled with one L or two? If it's two, then moodle is spelling it wrong.