Android wrong locale resolution for ES-EC language

Question

I have the next localization in my app:

values
values-es
values-es-rMX

When I have locale of the device set to es_EC (Ecuador), I see strings from MX folder! But accordingly to this tutorial, I should see strings from base ES folder (actually, this is the goal).

Why is it happening and how can I get correct app behavior?
I'm using an emulator with API level 28.

Lumbago

Answer 1

Okay, the answer is on another StackOverflow question, the reason is the same, this is intended behavior for Android system.

Lumbago