Mobile Scroll Issue on iPhone 15 Pro Max: Viewport Shrinking and Jumping Erratically

Good morning,

I’m implementing a webpage, and everything works fine on desktop. However, when viewing it on mobile, there’s a scrolling issue that causes the page to jump erratically up and down, as if the viewport is shrinking.

Here’s a link to the issue: CleanShot 2024-09-16 at 09.58.27 · CleanShot Cloud

The main challenge is that I can’t replicate the issue on my phone—it only happens on my client’s phone, which is an iPhone 15 Pro Max.

Does anyone know what might be causing this?

This version clarifies the issue and provides a professional tone for seeking help.