With Moodle 4.4 and the latest master version of format_onetopic no (additional) section is shown when section 0 is rendered before the tabs and a user visits the course for the 1st time.
Before it would either show any highlighted section or the 1st section additionally to section 0.
With Moodle 4.4 and the latest master version of format_onetopic no (additional) section is shown when section 0 is rendered before the tabs and a user visits the course for the 1st time. Before it would either show any highlighted section or the 1st section additionally to section 0.