One of our students contacted us because he could access his courses only via his user profile, but not via his dashboard. He couldn't understand why his dashboard was empty.
In fact he configured his dashboard to show his "future" courses instead of his courses "in progress".
However, he pointed out that the “show all” setting was ambiguous. He thought it referred to his courses and not the pagination system.

Our Moodle instance is in French, but I think there is also an issue for English instances.

The attribute "aria-label" on dropdown button is clearer than the label displayed.

Related discussion started here : https://moodle.org/mod/forum/discuss.php?d=462197