Just in incognito mode, the comment help is always starts expanded. I can collapse it but if there are 10 answers in a page, it's expanded for all 10 of them. Anyone else notice that?
This is by design; new users need help with comments.
We suppress the help (you can still show it by explicitly clicking show help) once you reach a certain reputation threshold.
In fact, there are dozens of behaviors on the site specific to new and low rep users, not just this one...