I have the same issue same timeline - no case no hairline crack still an issue - I’ve reset everything no dice.
I contact Apple support and it got escalated and the call back never happened
Issue completely went away - for about 10 minutes and returned and then went away again 3 hrs later for about a half hour second time - but it has returned again and Face ID is been completely inoperable for the past 5 hrs
This has to be a software update issue with 17.3.1 is my thought - as it’s been a bit clunky since I updated 4-5 days ago
PS turn off ‘stolen device protection’ because that only makes it more of a nightmare
Any others have issue or report to Apple ?
13 Pro Max
17.3.1