iOS 18 Beta (dev 3) location out of zone

Since running iOS 18 (all versions so far) the location of my iPhone is occasionally reported outside of my zone.

I’m using the companion app as a device.

Manual refresh fixes it but obviously certain automations run even I leave my zone which then get triggered.

Anyone else using iOS 18 setting a similar thing?

I’m having the same issue.
For some reason it happens only during the night, while during the day the location is fine.
What happens is that while sleeping the location changes to some km away from home, then comes back to home. This triggers an automation that disables the alarm.
I guess it is something related to iOS18 beta (running the public beta, not dev) as I never had this kind of issues before.