Happens on my iPhone 5, iPhone 6, iPhone 7 Plus, iPad Air 2 and my sisters iPhone 6S.
Some of you are probably not doing it "right".
It is a bit annoying when you constantly switch between twitter, snapchat, fb, safari and instagram like me. It sort of gets "stuck" and i end up on the spring board
Seems like it ultimately comes down to a matter of giving it about a second before doing it once you go into an app vs. doing it immediately right away.If you have a bunch of apps open and select the wrong one from the switcher, or have to work between different apps and forget where you are, this is quite an inconvenience.