Automatic Environment Configuration for themes & plugins

This is my Environment Configuration, my issue is that config/themes/ are not overriding by my local themes config (localhostname folder). But for site.yaml system.yaml it's ok.

I miss something, so config folder is for prod and my localhostname folder is for local, but when i'm in local theme config file are from config folder and not from localhostname

my folder structure

user
-accounts
-config
-localhostname
-data
-pages
-plugins
-themes
-- parent-theme
-- child-theme

my localhostname folder structure From learn.getgrav

localhostname
-plugins
-themes
-- parent-theme 
-- child-theme
site.yaml
system.yaml
---

ok after some investigations, it seems my issue is with theme child (Inheritance), when i'm in local and modify parent theme config file, it's ok but the child theme config file it's the one in my config folder and not in localhostname folder