Lists in course sections are styled as sub-lists (because the sections themselves are list items).

To reproduce:

1. Create a multi-level unordered list in a topic or week summary (note how the bullets display in the editor). Save and view the course page.

Expected display: Top-level list items should have a disc, 2nd-level items should have a circle, subsequent levels should display a square.

Actual display: Top-level items have 2nd-level bullets (circle), 2nd-level items have 3rd-level bullets (square).

2. Create a multi-level list in a label.

Expected display: Same as above
Actual display: All list items display square bullets

Something like this would work, maybe:

.course-content li.section ul, .course-content  li.section li.activity ul {list-style: disc; }

.course-content li.section ul ul, .course-content  li.section li.activity ul ul {list-style: circle; }

.course-content li.section ul ul ul, .course-content  li.section li.activity ul ul ul {list-style: square; }