The feature “lift subject from background” vanished the background from a photo

Hi guys,

I just installed the new IOS16 on my device, and tapped a Live Photo to see it and the new feature “lift subject from background” popped and the background just disappeared after my finger left the screen with no notice. Spoke with Apple customer support and because it is new there is nothing to do pretty much.

I thought unfortunately that Apple will be more thorough than this..

Someone help me😭