Disappearing scrolling bar after the nav link has been clicked

Hi there,
I’m designing in webflow for the first time, I made a really nice mega-menu and interactions within it. and I have also inserted a code that makes the scrolling bar disappear while the menu is open.

Unfortunately, after the nav link inside the menu clicked and goes to another section on the homepage, the scrolling bar is disappearing permanently.

I’m guessing it’s about the code that I put, can anyone help me figure this out?

Here is my public share link: https://orbor-portfolio.webflow.io/
Here is my read-only share link: https://preview.webflow.com/preview/orbor-portfolio?utm_medium=preview_link&utm_source=designer&utm_content=orbor-portfolio&preview=54a18769e358fe20e581dbe14703cdca&mode=preview