Make WordPress Core

Opened 2 years ago

Last modified 4 weeks ago

#55184 new defect (bug)

Custom style handle attached to a custom block style is never load even if the block is in the page.

Reported by: alexandrebuffet's profile alexandrebuffet Owned by:
Milestone: Awaiting Review Priority: normal
Severity: normal Version: 5.9
Component: Script Loader Keywords: needs-patch
Focuses: Cc:



I have a custom block based theme running on WP 5.9 that declares custom styles for certain blocks via the register_block_style function, but when I specify a style_handle the style is never enqueue even though the block is present in the page content (and core block assets are only loaded when they are rendered).

This issue ref to ticket #54457

Step-by-step reproduction instructions

  1. Create a theme
  2. Register a custom "Display" block style for the "Heading" block via register_block_style with "my-theme-block-style-css" style_handle
  3. Register a "my-theme-block-style-css" style via wp_register_style
  4. Add "Heading" block in page content with our "Display" style
  5. Check CSS, "my-theme-block-style-css" is not loaded

The relevant code

It seems that the render_block filter callback in enqueue_block_styles_assets from script-loader.php never fire.


Attachments (1)

block-styles.png (323.4 KB) - added by alexandrebuffet 2 years ago.
Block style registration code

Download all attachments as: .zip

Change History (6)

2 years ago

Block style registration code

#1 @daymobrew
22 months ago

I encountered the same issue (I called wp_register_style in the 'init' hook).

The CSS is enqueued when a theme does not include 'wp-block-styles' support (hence my workaround to enqueue when it does support that).
Enqueuing works correctly when editing the page. The issue is only on the front end.

#2 @daymobrew
22 months ago

It is supposed to have been fixed by but it isn't.

#3 @Drivingralle
19 months ago

I can confirm the problem persist in WP v6.0.1

Code to quickly test it:

add_action( 'init', function () {
	wp_register_style( 'my-fancy-quote', get_template_directory_uri() . '/my-fancy-quote-style.css' );
			'name'         => 'fancy-quote',
			'label'        => __( 'Fancy Quote', 'textdomain' ),
			'style' => 'my-fancy-quote',
} );

The handbook says the parmeter is called "style_handle":

The core says it's called "style" in some place:
and "style_handle" in other places:

Both of them are not working.

#4 @pagelab
17 months ago

  • Keywords needs-patch added

I can also confirm the bug. AFAIK the issue is that the patch on #54457 uses the render_block() filter in the enqueue_block_styles_assets function to conditionally enqueue the registered block style, but this function runs on the enqueue_block_assets hook (see wp-includes\default-filters.php), which is too late for render_block().

#5 @poena
4 weeks ago

#60367 was marked as a duplicate.

Note: See TracTickets for help on using tickets.