I don't have Peel on my phone as it's an S7 and it doesn't have an IR thingy (hence wouldn't work, hence why it's not preinstalled). So it can't be that... :(
My phone started doing this today too (11/07/17). I have a Samsung S7. I've attached a photo. Its really annoying because you have to swipe it right then unlock your phone. And you can't see notifications or anything.