Hey everyone! I'm working on an extremely long website for a client (mobile version is close to 50,000px), and I'm running into an issue with a pinned header on Mobile. The header is a simple shape bar that is set to pin to the browser at top middle that sits behind a logo pinned to the browser at top left and a CTA button pinned to the browser at top right. The header works perfectly on desktop at all breakpoints, it's pinned to the top and stays stationary while all content scrolls below it. However, on mobile, the pinned header starts out pinned to the top as expected, but after scrolling about 2,000px down it slowly begins to drift up so it eventually leaves the page entirely at around 4,000px. I've tried to find anyone having a similiar problem but couldn't come across this specific issue. Any suggestions?