Hi,
Well you actually show it in the video you’ve recorded.
You scroll down in the menu and OK, then everything is there.
But there is like no scrollbar, so nobody knows that they need to scroll INSIDE the menu…
If you just scroll down in the ‘window’ then you don’t see all the menu options.
In my opinion, if you open a menu in such a mobile device (hamburger layout), then the items for that menu option that you’ve opened should be displayed completely (all other content should be moved down), so that if you scroll down you see all the menu options.
How it is now, a natural reaction is to scroll using the scroll bar of the window and you don’t see all the menu options.
Hope you understand what I’m trying to explain here.