iOS 15 beta - Custom overnight focus not turning off

Hi MPUers

Just wondering if anyone has played with creating a custom Focus, scheduled overnight?

My use case is wanting to be basically in Do Not Disturb overnight, but to let notifications from my Ring security cameras through. I don’t want these when I am in DND (e.g. working at home), hence the need for a custom Focus.

Scheduling DND from 9:30pm to 6:00am works fine (and has ever since DND was available). But for my custom focus ‘Overnight’, it turns on just fine at 9:30pm but does not turn off at 6:00am.

Could just be a beta bug and I have reported it with the Feedback tool, but just wondered if a fellow nerd had come across the same thing.