Not on my plus. Does this happen with all the apps? I noticed a tad of pause when i open facebook. But all others switched over smoothly. Perhaps you have too many apps running on the background???
not on mine either, I'd take it to my nearest Apple store.
YES! especially on Facebook, when on FB and switch to FB Messenger...
I did come across the black screen with other APPs too, but mostly FB.
Thinking of doing this, and it will be my 3rd iphone 6+, first one it had a gap between the screen and the housing.... I am hoping an update will fix this.
This happens to me with the Facebook app on all devices not just the iPhone 6, but the mini retina and air as well.
Happening to me on Words With Friends