Menu getting blank in mobile view.

[hundkurserforalla]

When i use the "Mega Menu" feature because i have a lot of pages and want to have nice order on my webpage it getting blank or disappears when scrolling in mobile.

1. I open up the menu.
2. I open up one or two child menus.
3. When i scroll down maybe in the middle of the menu it disappears so you can't read or it becomes completely blank "white", then when you scroll up again it appears. I only have this problem when i activate "Premium Add-On" and need more pages in menu and sub pages there.
4. I been trying clicking off "Sticky Navigation" and "Transparent Header" doesn't help me. And i love the "Transparent Header" and "Sticky Navigation" features in "Premium Add-On".
5. The only fix is not to use "Premium Add-On" and not using the "Mega Menu" feature.
6. I use the latest version of everything Page Builder Framework 2.11.0.9 and Premium Add-On 2.10.0.4.
7. I had someone helping me with the webpage before not anymore, and he did a fix long time ago was looking in the emails and he wrote he disabled the "navOnScroll" with a javascript fix, don't know if that will help but i hope.

I really need to use "Mega Menu" because i getting a lot of pages and need order on the webpage.

Thanks in advance
Britt-Marie