despite limiting add_theme_support post-formats, all formats are displayed on posts and cpts

[ryno267]

Example is there are only 4 post formats that are added to add_theme_support, but all display on add new post and add new custom post type.

add_theme_support( 'post-formats', array( 'image', 'video', 'audio', 'link' ) );

Also have custom post type code that adds 'post-formats' to 'supports'

'supports' => array( 'title', 'editor', 'thumbnail', 'post-formats'),

Regardless of that, all 10 post formats are shown on add new posts and the 'add new' CPT I added support to.
Should it not only display those 4?

This is intentional, but there needs to be some documentation to make this clear to developers.

See: #19570, #23347

Duplicate of #23718, #23844, and #23990.

Related: #24059