Default block alignment class is not in get_block_wrapper_attributes

[warudin]

Description

I created a block, the settings are below in the block.json.

The block should have a full width alignment by default (mentioned here in the documentation: https://developer.wordpress.org/block-editor/reference-guides/block-api/block-supports/#align)

This works good in the editor. But in my render file, the get_block_wrapper_attributes() function is not outputting the align class.

The align class is only returned when I configure another block width then the one that’s in the attributes (so ‘none’ or ‘wide’). The default alignment is never returned, even after toggling another one and going back to the default alignment.

block.json:
{
	...
	"attributes": {
		"align": {
			"type": "string",
			"default": "full"
		}
		...
	},
	"supports": {
		"html": false,
		"align": [
			"wide",
			"full"
		],
		...
	},
	...
}

Step-by-step reproduction instructions

1. Configure a block to have a specific alignment (i.e. 'full') by adding it as a default value in attributes.align in block.json;
2. Configure and create a PHP render template file in block.json;
3. Use get_block_wrapper_attributes() to output the classes in the wrapper div;
4. Add the block to the editor and leave the default alignment configured, save the editor;
5. Check the classes being output in the front-end, the configured alignment will not be in the list that's being returned by get_block_wrapper_attributes().

Screenshots, screen recording, code snippet

No response

Environment info

• WordPress 6.2, Gutenberg 15.6.2, custom template (full site editing boilerplate)

Please confirm that you have searched existing issues in the repo.

Yes

Please confirm that you have tested with all plugins deactivated except Gutenberg.

Yes

[marcoluzi]

I got the same problem. Did you find a solution for that @warudin ?

[colorful-tones]

I would love to see this prioritized for the WordPress 6.5 release. Several issues are related, and it may be worth aggregating into a parent task.

@ndiego @gziolo, do you have any insight on the priorities here, please?

Some related issues:

• Style default attributes for block supports are not respected in dynamic render #52600
• Default attributes for block-support properties don't apply on dynamic blocks #50229
• Dynamic blocks: default values for attributes aren't converted into html comments #7342