iOS only: hive with encryption clearing database, app includes db usage in background

Has anyone ever experienced this? I will try to get an MVCE but i wanted to throw it out here before i forget because this is where "Get help" from the documentation went. :)

* Encrypted with flutter_secure_storage for the key
hive version: 2.2.3
hive_flutter: 1.1.0
flutter_secure_storage: "8.0.0"

from pubspec.lock

mac app uses Timer() to have db access every x minutes
iOS app uses https://pub.dev/packages/flutter_background_geolocation for db access when location changes.

Start by creating the promised MVCE with Hive 2.2.3, hive_flutter 1.1.0, and flutter_secure_storage 8.0.0, then reproduce iOS database access from flutter_background_geolocation callbacks. Done means the reproduction conditions are documented and the database-clearing behavior has a confirmed explanation or maintainer-verified fix.

Written by the indexing model from the issue text.