Scroll Tracking Percentage is Static Value

I have scroll tracking turned on for 2 elements in my design that are scrollable, however their Y percentage remains static when scrolling, but will change when the browser window resizes.

I believe this may be due to how I’m setting the height for these items. The height on these elements are calcs: "calc(100% - 45px)"

I’m not sure how to achieve the layout/design and get scroll tracking to work. Here’s a 1 min loom walking through my issue. Any help is super appreciated.