toonetcreation The sticky menu function has been injected through js script through relative code snippet in this file : /templates/ja_mood/js/script.js which conditionally changes the div tag for header to have transparent styling only when topbar-right position is enabled by having some module assigned to respective position otherwise, You will see the sticky affix menu from the beginning at top if no module is assigned to topbar-right position.
Or
1) As workaround, You can assign blank custom module to topbar-right position with show title to hide
2) Try add this at end of custom.css file thereon:
.ja-topbar{display:none;}