I don't know if its just me, but since upgrading my Air 1 to iOS9, I find minimizing apps with the 'all finger pinch' gesture has lost its sensitivity and is clumsy to use. It works, but most times I have to make 2 - 3 attempts to minimize the app. In iOS7 and 8, it was second nature for me to do this. It became my preferred method of minimizing apps because It worked every time. Since upgrading to 9, I've had to start using the side button to minimize apps. Am I the only one seeing this?