Reuseable floating group not scrolling to top


I am using a floating reuseable element to display an rg.

When user clicks on item in rg, I show another floating group with more data.

When a user scrolls down the rg to find an item, the reuseable element scrolls like a page.

But when user clicks rg item to show further data, the other floating group shows, but as the reuseable element is scrolled down, user has to manually scroll up to see floating group.

I have tried scroll to workflow action and run java script > window.scrollTo(0,0) but neither has worked.

Any ideas?