When a course cannot be published yet (no published lesson, no room on the plan, or what selling it needs), pressing Publish course now shows what is missing under the course's name, beside the button, with a link to fix it. Before, the message appeared in small text under the Outline heading and the page scrolled, so it looked as if nothing had happened.
Across Magpie, a button that needs answers first (such as Send for signature and Publish cohort) no longer scrolls the page when the first missing answer is already on screen. Courses is not yet open to members.