It's not actually on the screen, it's on the fingerprint sensor.
You can fix it? @Anders_ASUS
No, this gesture is really for the screen. I used it in Android 9 and I use it in Android 10. I assume it's also present in Android 11, unless something's changed. I don't have Android 11 yet.
Well, something is wrong because with the screen it does not work, only with the fingerprint sensor.
Tap on that text "Swipe up to wake up" to invoke help screen, read the help and try again.
You're right, it wasn't really activated until you showed help. It should activate without having to go to the help screen.