No, it’s just the plugins
Breadcrumb NavXT
Classic Editor
Contact Form 7
Easy Updates Manager
GP Premium
Limit Login Attempts Reloaded
Self-Hosted Google Fonts
Shortcodes Ultimate
Table Press
WPML
installed.
The menu is now sticky, the hamburger icon is not.
I think it makes more sense to rebuild the menu but without knowing what the problem was / is, this is not the best way.