Yes we have the exact same issue.
Since the update, the "swipe up" protecting against accidental touch is very capricious, sometimes not functional.
Hoping for a rapid update to fix it...
It doesn't work, period. It's actually really annoying and making me think does no one else have this problem?! So any other time of the day it never appears, then when my alarm goes off first thing in the morning, it is IMPOSSIBLE to get rid of it, meaning that my alarm will ring and ring until it can no longer ring because I simply cannot swipe up to unlock it! It doesn't work, they need to sort it out, I've had to turn it off now, as I had no other choice.