I don't see this bug on my iPhone 6. Try to reboot?Has this bug been fixed? If you swipe CC all the way up and then drag it from the bottom a bit more, it will "fly out" the screen and the dock icons' names will be gone. This looks very good actually, I'd love the black dot for running apps ala Sierra there!
View attachment 673726
If not, report this bug to Apple using Feedback app or Bug Reporter on the web.