Thanks guys. It's a shame it is implemented. Can see a lot of good uses for it avoiding tricky guesture coding. I thought I was on to something. Lazy mans guestures 😁
Still a useful technique though.
I was Just trying create a view like the one below. Have seen it in apps were they are advertising thier other products/apps. It's very effective having the the partial panels either side with a reduced alpha and the middle page with a alpha of 1. Would also look nicer sitting inside the blur view @omz recently posted. I am not going to try and do anything too funky. There will be other ways to to work around I am sure.