[WP 6.6 beta1] Trying to rename posts w/o registered titles creates a WSOD

[them-es]

Description

The bug occurs in the new Post title rename control introduced in WP 6.6 when a custom post has been registered w/o supports title arg (see step 1 below).
Renaming posts that don't support titles should not be possible.

Step-by-step reproduction instructions

1. Register a custom post type - don't include "title" in the "supports" args:
   https://developer.wordpress.org/reference/functions/register_post_type/

Example:

register_post_type(
    'my-custom-post',
    array(
        'labels'       => array(
            'name'          => esc_html__( 'My custom post (no title)' ),
            'singular_name' => esc_html__( 'My custom post (no title)' ),
        ),
        'public'       => true,
        'show_in_rest' => true,
        'has_archive'  => false,
        'supports'     => array( 'editor' ), // Note that "title" is not included here!
        'show_ui'      => true,
    )
);

2. Publish a new post
3. Now reload the page
4. Click on "Rename" in the 3-dot menu next to "No Title" (see screenshot below)
5. A WSOD appears with the following error message (see screenshot below)

TypeError: Cannot read properties of undefined (reading 'rendered')
    at RenderModal (/wp-includes/js/dist/editor.js?ver=acb42d08bcf2259eef90:25933:144)
    at renderWithHooks (webpack://WordPress/./node_modules/react-dom/cjs/react-dom.development.js?:15486:18)
    at mountIndeterminateComponent (webpack://WordPress/./node_modules/react-dom/cjs/react-dom.development.js?:20098:13)
    at beginWork (webpack://WordPress/./node_modules/react-dom/cjs/react-dom.development.js?:21621:16)
    at beginWork$1 (webpack://WordPress/./node_modules/react-dom/cjs/react-dom.development.js?:27460:14)
    at performUnitOfWork (webpack://WordPress/./node_modules/react-dom/cjs/react-dom.development.js?:26591:12)
    at workLoopSync (webpack://WordPress/./node_modules/react-dom/cjs/react-dom.development.js?:26500:5)
    at renderRootSync (webpack://WordPress/./node_modules/react-dom/cjs/react-dom.development.js?:26468:7)
    at recoverFromConcurrentError (webpack://WordPress/./node_modules/react-dom/cjs/react-dom.development.js?:25884:20)
    at performSyncWorkOnRoot (webpack://WordPress/./node_modules/react-dom/cjs/react-dom.development.js?:26130:20)

Screenshots, screen recording, code snippet

Output:

Environment info

• WordPress 6.6 beta1

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

Yes

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

No

[t-hamano]

Thanks for the report. #62248 should solve this problem.

[them-es]

You're right @t-hamano - the PR you linked should fix this bug and already got "backport" labeled. So, let's close this issue and follow the discussion in the open PR.

Thanks!