I have a rather interesting phenomenon in one of my Moodle courses which I am unable to replicate in other courses.
In this course, the title of the uppermost topic ("General" by default, or #section-0 by link) is not displayed in the course navigation menu:
Normally, the navigation menu starts with the title of topic 0 ("General" by default):
Does anyone know how this could happen?
Besides, the way the topic format works right now in regards to topic#0 is inconsistent anyways - I opened a Moodle Tracker item describing this: