waitlisted when space still available

<p>I tried to enroll in Classic 10B for section 106.
The section still has seats available because it says 25 student(s) are enrolled, with a limit of 30 and 1 student(s) are on the waiting list, with a limit of 30.
Does anyone know why I'm put on the waitlist?</p>

<p>The lecture is full. Doesn’t matter that discussion seciton 106 has space if the lecture is full. Waitlist on one means waitlist automatically on the other.</p>

<p>Oh I see. Usually, all the sections are full when the lecture is full.
Thanks for the comment!</p>