Missing `core/post-author-name` in WP Core

[bgturner]

Description

The Twenty Twenty Three theme uses the core/post-author-name block, which isn't included in the6.1-beta2 version of WP Core.

Specifically, when I use the site editor to edit a single post, I get this error:

Your site doesn’t include support for the "core/post-author-name" block. You can leave this block intact or remove it entirely.

Installing and activating the Gutenberg plugin removes that error.

Step-by-step reproduction instructions

1. On a blank plain 6.1-beta2 version of WP, open the site editor
2. Navigate to the "Single" template
3. Scroll to the bottom of the post content and note the missing core/post-author-name
4. Install and activate the Gutenberg plugin
5. Return to the "Single" template in the Site editor and note that the error no longer is there.

Screenshots, screen recording, code snippet

Environment info

Because this is testing Beta Core, I didn't use Gutenberg initially. Here's the content of my site environment:

### wp-core ###

version: 6.1-beta2
site_language: en_US
user_language: en_US
timezone: +00:00
permalink: /%postname%/
https_status: false
multisite: false
user_registration: 0
blog_public: 1
default_comment_status: open
environment_type: local
user_count: 3
dotorg_communication: true

### wp-paths-sizes ###

wordpress_path: /Users/ben.turner/Local Sites/wordpress-beta-tester-819/app/public
wordpress_size: 49.93 MB (52355561 bytes)
uploads_path: /Users/ben.turner/Local Sites/wordpress-beta-tester-819/app/public/wp-content/uploads
uploads_size: 45.40 MB (47601470 bytes)
themes_path: /Users/ben.turner/Local Sites/wordpress-beta-tester-819/app/public/wp-content/themes
themes_size: 13.94 MB (14616248 bytes)
plugins_path: /Users/ben.turner/Local Sites/wordpress-beta-tester-819/app/public/wp-content/plugins
plugins_size: 501.59 KB (513629 bytes)
database_size: 3.19 MB (3342336 bytes)
total_size: 112.94 MB (118429244 bytes)

### wp-active-theme ###

name: Twenty Twenty-Three (twentytwentythree)
version: 1.0
author: the WordPress team
author_website: https://wordpress.org
parent_theme: none
theme_features: core-block-patterns, post-thumbnails, responsive-embeds, editor-styles, html5, automatic-feed-links, block-templates, widgets-block-editor
theme_path: /Users/ben.turner/Local Sites/wordpress-beta-tester-819/app/public/wp-content/themes/twentytwentythree
auto_update: Disabled

### wp-themes-inactive (3) ###

Twenty Twenty: version: 2.0, author: the WordPress team, Auto-updates disabled
Twenty Twenty-One: version: 1.6, author: the WordPress team, Auto-updates disabled
Twenty Twenty-Two: version: 1.2, author: the WordPress team, Auto-updates disabled

### wp-plugins-active (2) ###

WordPress Beta Tester: version: 3.2.2, author: Peter Westwood, Andy Fragen (latest version: 3.2.3), Auto-updates disabled
WordPress Importer: version: 0.8, author: wordpressdotorg, Auto-updates disabled

### wp-plugins-inactive (1) ###

Akismet Anti-Spam: version: 5.0, author: Automattic (latest version: 5.0.1), Auto-updates disabled

### wp-media ###

image_editor: WP_Image_Editor_Imagick
imagick_module_version: 1808
imagemagick_version: ImageMagick 7.1.0-46 Q16 x86_64 5ef3d4d66:20220816 https://imagemagick.org
imagick_version: 3.7.0
file_uploads: File uploads is turned off
post_max_size: 1000M
upload_max_filesize: 300M
max_effective_size: 300 MB
max_file_uploads: 20
imagick_limits: 
    imagick::RESOURCETYPE_AREA: 64 GB
    imagick::RESOURCETYPE_DISK: 9.2233720368548E+18
    imagick::RESOURCETYPE_FILE: 6144
    imagick::RESOURCETYPE_MAP: 64 GB
    imagick::RESOURCETYPE_MEMORY: 32 GB
    imagick::RESOURCETYPE_THREAD: 1
imagemagick_file_formats: Unable to determine
gd_version: bundled (2.1.0 compatible)
gd_formats: GIF, JPEG, PNG, WebP, BMP
ghostscript_version: not available

### wp-server ###

server_architecture: Darwin 21.6.0 x86_64
httpd_software: nginx/1.16.0
php_version: 8.1.9 64bit
php_sapi: fpm-fcgi
max_input_variables: 4000
time_limit: 1200
memory_limit: 256M
max_input_time: 600
upload_max_filesize: 300M
php_post_max_size: 1000M
curl_version: 7.84.0 (SecureTransport) OpenSSL/1.1.1q
suhosin: false
imagick_availability: true
pretty_permalinks: true
htaccess_extra_rules: false

### wp-database ###

extension: mysqli
server_version: 8.0.16
client_version: mysqlnd 8.1.9
max_allowed_packet: 16777216
max_connections: 151

### wp-constants ###

WP_HOME: undefined
WP_SITEURL: undefined
WP_CONTENT_DIR: /Users/ben.turner/Local Sites/wordpress-beta-tester-819/app/public/wp-content
WP_PLUGIN_DIR: /Users/ben.turner/Local Sites/wordpress-beta-tester-819/app/public/wp-content/plugins
WP_MEMORY_LIMIT: 40M
WP_MAX_MEMORY_LIMIT: 256M
WP_DEBUG: false
WP_DEBUG_DISPLAY: true
WP_DEBUG_LOG: false
SCRIPT_DEBUG: false
WP_CACHE: false
CONCATENATE_SCRIPTS: undefined
COMPRESS_SCRIPTS: undefined
COMPRESS_CSS: undefined
WP_ENVIRONMENT_TYPE: local
DB_CHARSET: utf8
DB_COLLATE: undefined

### wp-filesystem ###

wordpress: writable
wp-content: writable
uploads: writable
plugins: writable
themes: writable

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

[ndiego]

I can confirm. @carolinan it does not seem like the Post Author Name block was included in 6.1. Any idea why?

[colorful-tones]

Confirmed this bug as well, and it will currently impact Twenty Twenty-Three: https://github.com/WordPress/twentytwentythree/blob/trunk/patterns/post-meta.php#L52

[colorful-tones]

I think part of the issue here is that Twenty Twenty-Three should likely be using the core/post-author block in the patterns/post-meta.php. As the core/post-author-name is likely an inner child of core/post-author.

[carolinan]

I can confirm. @carolinan it does not seem like the Post Author Name block was included in 6.1. Any idea why?

No idea. I am not part of the release squad. I have not seen any conversations about it not being included.

[carolinan]

I think part of the issue here is that Twenty Twenty-Three should likely be using the core/post-author block in the patterns/post-meta.php. As the core/post-author-name is likely an inner child of core/post-author.

It is not a child block. The individual blocks were intended to replace post-author but it hasn't been done yet.

[carolinan]

Looks like it was made experimental 5 months ago @gziolo @adamziel.

[ndiego]

cc @mikachan

[mikachan]

Thanks for the ping! @colorful-tones fixed this in TT3 by using the post-author block instead of post-author-name: https://github.com/WordPress/twentytwentythree/pull/236

It would still be good to follow-up with more details around the post-author-name block, but we can probably close this issue based on this being fixed in TT3 directly (if this is the only thing affected by this block).

[ndiego]

Thanks @mikachan. @gziolo @adamziel @ockham what are the steps needed to make this block not experimental? Since we now have a fix for TT3, and the addition of a new block is not within the scope of a Beta/RC, the addition of the block to Core will need to get punted to 6.2. That said, I want to make sure we don't miss it again. Anecdotally, I know this block is being used quite a bit in experimental block themes.

[ockham]

I think the _experimental flag needs to be removed from block.json:

https://github.com/WordPress/gutenberg/blob/86730151579447a6c298cccfb7401b31c067fddc/packages/block-library/src/post-author-name/block.json#L4

(I think we used to have an allow-list of blocks in Core, but that changed per @gziolo's https://github.com/WordPress/wordpress-develop/pull/2940 which now evaluates that block.json field instead.)

[ndiego]

Now that TT3 has been updated to not require the Post Author Name block, there is no urgency on this issue for 6.1 but will target 6.2 for inclusion.

[desrosj]

Could someone clarify whether the intention was to include the core/post-author-name block as stable and not experimental in 6.1? Or, are there are any other side effects elsewhere in the editor for 6.1 as a result of this block not being marked stable and available at core/post-author-name?

I'm trying to determine if #45008 is something that should be merged and included in 6.1.1.

[ockham]

I think the original intention was to include it as stable, but it didn't make it in time before the cut-off. TT3 was fixed so it'd work without the block.