Hiding of the admin bar is not allowed.

So REQUIRED: You are not allowed to hide the admin bar. will show if author is using #wpadminbar ID in the stylesheet.

If theme check doesn’t allow usage of #wpadminbar in css, then some filter should be added in WP_Admin_Bar class to allow adding css classes. Theme authors (like us) are not trying to hide admin bar, but fix it’s absolute position in regards to theme layout.