I'm the Cubmaster, and yes, my Son acts up, always yelling "hey Dad" etc when I'm trying to run a Pack meeting. He's a good kid, but to him, I'm Dad, doesn't matter I have the CM hat on. So I've told the Den leaders to feel free to call him on it, and they do :')
And I agree, he does get "stuck" coming early and staying late to every event, but he doesn't realize the perks he gets either, a lot more camping which he enjoys, gets to pick the menus he likes etc.
So, he's no worse than many other kids, just more obvious when he interupts me