IOS 10 screen bug?

So, this morning when I woke up, this bar appeard at the bottom of my screen. No matter if I'm on my home screen or in any app, it's still there. If you change the orientation, the bar still stays on the side with the home button. Also, it is mirroring the top of the screen. It's small but it's really annoying me. The only thing that happend out of the norm recently is I got my screen replaced after a crack(a big one that I ignored for like 3-4 months but I finally got fixed), but I got that done four days ago and it just appeared this morning. Also, at one point today after I changed my wallpaper, it disappeared. But after I locked my screen and turned it back on, it came back. I tried to change my screen again to see if it disappeared again but it did not. So, does anyone know what it is? How to fix it?

This is super annoying

Thanks, Apple forums are useless

Btw I got the screen replaced at ubreakifix