Can't avoid scroll while preloader animation is on

I tried everything but can’t avoid scroll while preloader animation is on. When I “display: hide” my Lottie animation during the preloader animation and then “display: block” it again on the end, it won’t work anymore. Is it a bug?

I’ve been trying to fix it for 1 week, but still couldn’t. Can anybody help me with this? thanks!

here’s the read-link: Webflow - metapod.