Huh? It usually pops up a message asking if you want to undo, which you need to tap. I'm pretty darn sure this is how the feature has worked since it was introduced.
As I said, I'm pretty darn sure it has always popped up a dialog. Certainly, the dialog has existed for a very long time, I recall seeing it on my first gen iPad, when I was in High School. (I graduated college three years ago.)