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Navbar animation only works in one page

Hi all,
I set up an animation for hiding/showing the navbar while scrolling the page.
It works nice but when I try to replicate it in other pages it doesn’t work.

You can see the read only link here
https://preview.webflow.com/preview/testing-0d69d4?utm_medium=preview_link&utm_source=designer&utm_content=testing-0d69d4&preview=2005bba7296d7c32e88ded1f26588254&mode=preview

Can anybody help me out? Thanks in advance!