I have this problem too since upgrading to the latest and previous latest. My initial upgrade to 11 didn’t have this problem. Really started with 11.0.2
but your description is a little bit different than mine. My home button works 100% once logged into the iPad. Also the touchID works 100% once logged on. It’s really an issue just at the logon screen. Only on that screen sometimes for many times the home button doesn’t respond to logon.
to wake up the device the home button also works 100% of the time.
so it’s really limited to the login screen.
too bad Apple never gives support because Apple considers customers useless worthless piece of crap 😟
wish they had some customer support like adobe, microsoft and other professional companies have.
of course you can call paid support, but this is obviously a bug by Apple so i’m definitely not paying for the mistakes of Apple.