'drush si --db-prefix ...' to add table prefixes ignored; install is complete, but missing prefixes

[pgnd]

with

drush core:status
	Drupal version : 11.0.9
	Site URI       : http://default
	PHP binary     : /usr/bin/php
	PHP config     : /usr/local/etc/php8/php.ini
	PHP OS         : Linux
	PHP version    : 8.4.1
	Drush script   : /srv/drupal.app/vendor/bin/drush.php
	Drush version  : 13.3.3.0
	Drush temp     : /tmp
	Drush configs  : /srv/drupal.app/vendor/drush/drush/drush.yml
	Drupal root    : /srv/drupal.app/web
	Site path      : sites/default

not yet installed,

mariadb-show ${D11_DB_NAME}
	Wildcard: db_drupal
	+-----------+
	| Databases |
	+-----------+
	+-----------+

exec of drush si with

drush site-install --help | grep -i "db-prefix"
	--db-prefix=DB-PREFIX         An optional table prefix to use for initial install.

echo "${D11_DB_URL}"
	mysql://drupal_user:[email protected]:12345/db_drupal

echo "${D11_DB_PREFIX}"
	pfx_

drush -vvv site-install standard -y \
 --db-su=${DB_SU_USR} \
 --db-su-pw=${DB_SU_PW} \
 --site-name="${D11_SITE_NAME}" \
 --sites-subdir="${D11_SITE_NAME_LC}" \
 --db-url="${D11_DB_URL}" \
 --db-prefix="${D11_DB_PREFIX}" \
  --site-mail="${D11_SITE_EMAIL}" \
  --account-mail="${D11_ADMIN_EMAIL}" \
  --account-name=${D11_ADMIN_USR} \
  --account-pass=${D11_ADMIN_USR} \
  --locale=en \
  install_configure_form.enable_update_status_emails=NULL

completes,

...
 [success] Installation complete. [26.62 sec, 46.96 MB]

but

mariadb-show ${D11_DB_NAME}
	Database: db_drupal
	+----------------------------------+
	|              Tables              |
	+----------------------------------+
	| block_content                    |
	| block_content__body              |
	| block_content_field_data         |
	| block_content_field_revision     |
	| block_content_revision           |
	| block_content_revision__body     |
	| comment                          |
	| comment__comment_body            |
	| comment_entity_statistics        |
	| comment_field_data               |
	| config                           |
	| file_managed                     |
	| file_usage                       |
	| help_search_items                |
	| history                          |
	| key_value                        |
	| menu_link_content                |
	| menu_link_content_data           |
	| menu_link_content_field_revision |
	| menu_link_content_revision       |
	| menu_tree                        |
	| node                             |
	| node__body                       |
	| node__comment                    |
	| node__field_image                |
	| node__field_tags                 |
	| node_access                      |
	| node_field_data                  |
	| node_field_revision              |
	| node_revision                    |
	| node_revision__body              |
	| node_revision__comment           |
	| node_revision__field_image       |
	| node_revision__field_tags        |
	| path_alias                       |
	| path_alias_revision              |
	| router                           |
	| search_dataset                   |
	| search_index                     |
	| search_total                     |
	| sequences                        |
	| shortcut                         |
	| shortcut_field_data              |
	| shortcut_set_users               |
	| taxonomy_index                   |
	| taxonomy_term__parent            |
	| taxonomy_term_data               |
	| taxonomy_term_field_data         |
	| taxonomy_term_field_revision     |
	| taxonomy_term_revision           |
	| taxonomy_term_revision__parent   |
	| user__roles                      |
	| user__user_picture               |
	| users                            |
	| users_data                       |
	| users_field_data                 |
	| watchdog                         |
	+----------------------------------+
	```

table name prefixes, "pfx_", are not applied / missing