Disable scroll when floating group is visible

So I have a single page app that has a feed (feed is similar to facebook’s feed). When I click a certain item in the feed I have a fullscreen floating group that shows details for the item. But any scroll input on that floating group scrolls the feed which is visible behind the floating group.

So the question is if there is any possibility to block RG from scrolling whena floating group is displayet over it.