id	summary	reporter	owner	description	type	status	priority	milestone	component	version	severity	resolution	keywords	cc	focuses
65796	The Customizer doesn't use the admin_body_class filter	afercia		"The [https://github.com/WordPress/wordpress-develop/blob/be1c69c4c97a80a24620b960ff8719a01097751e/src/wp-admin/customize.php#L190 Customizer] doesn't make use of the `admin_body_class` filter. I would expect all admin pages to use it.

Rationale: plugins may want to add their own CSS classes for their own purposes.

Actually, while developing a small plugin, I had to resort to the `customize_controls_head` action hook and add my CSS class via JavaScript. It is a workaround but it's not ideal.

Wondering if there is any specific reason why the Customizer doesn't use the `admin_body_class` filter."	defect (bug)	new	normal	Awaiting Review	Customize		normal		has-patch