Version 4.2.9 : unable to get options

Since the 4.2.9 (and fix of fix of…), I do not succeed in loading the values

define('TS_IMMO_SETTINGS', 'tsimmo_settings');

$args = array(
            'display_name' => __('Configuration de la passerelle Ts-Immo', 'ts-immo'),
            'display_version' => TS_IMMO_VERSION,
            'menu_title' => esc_html__('Passerelle Ts-Immo', 'ts-immo'),
            'menu_type' => 'submenu',
            'allow_sub_menu' => true,
            'page_title' => __('Configuration de la passerelle Ts-Immo', 'ts-immo'),
            'footer_text' => __(sprintf('Passerelle Ts-Immo <strong>v.%s</strong> - Produit sous Licence - Expire dans <strong>%s jour(s)</strong>', TS_IMMO_VERSION, $exp), 'ts-immo'),
            'admin_bar' => true,
            'admin_bar_icon' => 'dashicons-admin-multisite',
            'admin_bar_priority' => 50,
            'global_variable' => TS_IMMO_SETTINGS,
            'dev_mode' => false,
            'display_version' => TS_IMMO_VERSION,
            'update_notice' => true,
            'customizer' => true,
            'page_priority' => null,
            'page_parent' => 'options-general.php',
            'page_permissions' => 'edit_posts',
            'menu_icon' => 'https://www.ts-immo.org/wp-content/uploads/2020/03/Ts-Immo-Logo-large.png',
            'last_tab' => '',
            'page_icon' => 'icon-themes',
            'page_slug' => 'tsimmooptions',
            'save_defaults' => true,
            'default_show' => false,
            'default_mark' => '',
            'show_import_export' => true
        );

        Redux::setArgs(TS_IMMO_SETTINGS, $args);

I load the code above within an init hook (I add fields after that).

After that, always in the init action (but after that loading), I have an empty value in $tsimmo_settings