Yep, no idea how to fix it outside of turning passcode off which defeats the purpose of it and Face ID.

Update: OK, so I disabled the passcode and re-enabled it, changed the code and now it seems to be working.

Update 2: Scrap that, the issue has returned now with the confirm passcode screen hanging.

I just got the 256 gb space gray X today and I noticed when I change my passcode, once I confirm it the second time, it stays permanently loading and never confirms the passcode. Also, I have an alert to use passcode with iCloud but the same thing happens, once I type in the passcode it stays on the "loading" page permanently. 

Is anyone having issues with the passcode?