I have confirmed logging out of iCloud then logging back in corrects it, temporarily. Once a reboot occurs snapshots do not refresh. On some devices, not all cameras are present.
This is consistent on iPad IOS 15.2, IOS 15.2, MAC OS 12.1 and Watch OS 8.3, tvOS 15.2. I can not confirm if the fault is within the device or cloud service. The issue did start sometime after the update to 15.2, 8.3, 12.1 (respectively speaking).
I can not confirm which is the cause, the device or server-side, as the time of fault was not observed immediately after the OS update. I notice a video refresh issue earlier this week. OS updates 15.2, 12.1 and 8.3 were released on December 13, 2021. I did update my device OS within a couple of days of the release.
My logic to my cause analysis, if this issue was immediately after the OS update and a reboot occurred the same day (13th /14th) this would lead towards the device. If the issue didn't occur this week and the devices were updated and a reboot after post-reboot on the 13th /14th, a 15.2 boot (2nd boot since the update) then I would suspect a server-side issue (iCloud).
Devices the issue was observed on:
- M1 12.9 iPad
- A12X 12.9 iPad
- iPhone 12
- iMac 2017 late
- Series 7 45mm
- Series 6 40mm
- Apple TV HD