[GSAP pin-spacer appending [transform: translate(0px, 469.001px)] on child component]

Hi everyone, I was trying to recreate this GSAP animation [https://thesiyhbrand.github.io/books] while doing that I found a bug where a transform: translate(0px, 469.001px); is getting triggered on the main container

Here is my code[https://rb.gy/jrhq8k]

How to fox this issue?

 

please scroll 2-3 times to see the problem