I’ve seen this question come up many times now, so I figured I’d post the solution online for all to see.

Are you using the LearnDash course grid to display your lessons in grid format? If you’re using the [ld_lesson_list] shortcode (or block) on your course page, and want to hide the default lesson list, here’s the solution.

Add this CSS code to the “Additional CSS” area in the WordPress Customizer.

.single-sfwd-courses .ld-lesson-list {
	display: none;

This will specifically target the LearnDash lesson list only on course pages.

LearnDash course content lesson list, crossed out