Sticky menu - sidebar menu can't see all of page lists on mobile device



when I have the menu as sticky and on the sidebar menu, when it goes sticky on mobile devices two or three pages are hidden behind the sticky menu. When I use the dropdown menu you can see all the pages. Any ideas of a fix for this.
Ive attached two screen shots for the sidebar dropdown and the standard dropdown. thanks



this seems to be a glitch on the preview. once the site is uploaded it works fine.