@grote I also wanted to additionally comment on "thanks! The log shows, that every app automatically gets the android.permission.OTHER_SENSORS permission without even asking for it which is a weird thing to do as it is isn't how permissions in Android work and may break other things."

The reason why the permission is granted to apps by default is for app compatibility. Since this permission isn't a regular one, apps expect to be able to use sensors. There is a setting that can deny this permission to apps by default, in which case when an app tries to access the device's sensors covered by that permission, the user is notified and can optionally grant sensors access to that specific app.