"... does the Nokia 8 seem to close and redraw apps in the background very frequently?"
In newer Android versions, background apps has to do something useful, else it will be suspended. How the app behaves when reactivated is for the app developer to decide.
Apps targeted for older Android versions can currently be kept active by for example displaying a notification. SportsTracker does this when tracking, but is suspended when it is not tracking. (Developers may have to rethink such workarounds to be Android P compatible).
- The idea is that the user can push the back or home button without having to close the app when finished using it. The operating system decides what to keep running, and what is suspended and cached over the next minutes, hours and days.
It's still partly experimental, like everything else in Android...
For nerdy reference:
The behaviour of my Nokia 8 was very shaky at first, after having restored a backup from a Nokia 6. It's stable (for two months and counting) at Android 8.1 after doing a fresh set up without restoring a backup, and without automatic install of third-party apps.
- I blame Android's backup/restore routines, not the phone.
If you read my second, longer post you will see that the issue I had is not typical Oreo background management.
Opening just 2 apps and switching from one to the other and then back again would cause the app to refresh, no matter the app.
This was not normal Oreo behaviour. The apps weren't being kept in memory whatsoever until I reset the camera app, which fixed the issue. Now I can have 4-5 apps open in the background and go back to them in a reasonable amount of time without them being refreshed.
I blame Android's backup/restore routines as the root cause for the camera app misbehaving in the first place.
Other things affected by the update and restore process may be missed calls, alarms and calendar alerts, Bluetooth, Wi-Fi and GPS turning itself off, notification banners not appearing, music and tracking apps closing itself etc.
Just in my opinion, and for what it is worth.
I use the Nokia 8 HMD camera app on an everyday basis without any background app management issues occurring (and without the camera issues reported by others) so something else must be the culprit?
Thanks. I'll keep that in mind.