should_load_separate_core_block_assets filter no longer forces loading of block styles

[domainsupport]

We use the following code in v6.3.2 and earlier to force the loading of /wp-includes/css/dist/block-library/style.min.css so that manually inserted blocks such as the Cover block or Columns block (via custom shortcodes) can still benefit from their block styles ...

add_action('setup_theme', 'my_setup_theme');

function my_setup_theme() {

         add_filter('should_load_separate_core_block_assets', '__return_false');

}

This no longer works in v6.4.1 and /wp-includes/css/dist/block-library/style.min.css is not loaded.

We are using Twenty Twenty-Two theme.

[domainsupport]

I've found a fix for this whereby adding a priority of 11 to the filter allows this to work again.

<?php
add_action('setup_theme', 'my_setup_theme');

function my_setup_theme() {

         add_filter('should_load_separate_core_block_assets', '__return_false', 11);

}

I'm going to add my findings to the notes for the filter ​https://developer.wordpress.org/reference/hooks/should_load_separate_core_block_assets/