You’ve forced your Elementor section to be full width, which uses javascript and places it on top of everything (even outside of the content container).
I was thinking from a usability perspective, that the Sidebar Layout setting should change. Although, I think you said in another thread that GP sections is being discontinued due to Gutenberg. Therefore, I’m going to use Elementor sections for now.
Btw the way, does anyone know, round about, when Gutenberg will be released?