App shows strings in US English even when the phone is set to UK English on Android >= 7.0

[Cactric]

Describe the bug
App shows strings in US English even when the phone is set to UK English on Android >= 7.0.
The in-app language is set to the system language.

To Reproduce
Steps to reproduce the behavior:

1. Set phone to UK English if not already; make sure app language is set to system language
2. Click on the 3 dots menu in the top right and select 'Solstice/Equinox'
3. See 'Fall Equinox' instead of 'Autumn Equinox'

Expected behavior
The UK English strings, such as "Autumn Equinox", are used rather than the US English strings in res/values-en_rUS ("Fall Equinox", etc.)

Screenshots
Android 6, with expected behaviour

Android 7.0, with unexpected behaviour

Version Info:

• App Version: 0.16.11
• Android Version: 14
• Device Model: moto g73
• (screenshots were taken from Android Studio's emulator)

Additional context
Probably related to https://developer.android.com/guide/topics/resources/multilingual-support: Android would rather use en_US than default to fallback resources (which is where the UK English strings are)

[forrestguice]

Thanks for this excellent bug report.

All this time I thought the app was showing "colour", "autumn", etc. I might have never noticed... A similar problem affects the help urls - most English speaking users are being directed to the Github hosted site instead of Codeberg.

Android would rather use en_US than default to fallback resources

This is surprising behavior. I suppose it makes perfect sense in the context of other languages though. The common parent values-en is missing so it resolves to values-en-rUS instead. I think adding fallbacks to values-en should fix it.