One thing I don't like is the way they changed the interface to close open apps. I liked the way they implemented that in iOS 8.x versions.
I just opened multiple Apps, and then hit the home button 2 times rapidly.
At that point I swiped from left to right, and noticed it was very fluid the way it works now.
Then I swiped up to close the programs if that is what you referring to closing programs? Anyway, tThat’s how I always closed programs in iOS 8.x.