When I swipe my s6 it automatically goes to the phone screen instead of the home screen.if I hit the enter then it goes to the home screen. My wife has the same phone an it does not do it.
I bet you are doing what my mom was doing on her Grand Prime, when she was swiping she was hitting the phone icon at the bottom left and it was opening the dialer, which is what it is supposed to do.
She didn't even realize that was what she was doing.