I've just (2 weeks ago) released an iOS/watchOS app and have a TestFlight user experiencing this.
The app listens for HealthKit updates and wakes/processes/records data to update its complication.
The user in question is on an S10 26.4 (23T240).
That I know of no other user is experiencing this. I've had no reports of this happening for production users.
Topic:
App & System Services
SubTopic:
General
Tags: