Custom blocks are no longer displayed and no longer appear in the custom block library

Problem/Motivation

Hello,
After updating the core from 8.5.6 to 8.6.0, the custom block library appears empty. Custom block types still exist, but the custom block list is empty. Yet, they still exist in the database.

On the Block Layout page, custom blocks are listed in their place in the regions, but they do not appear with the message :

This block is defective or missing. The content is missing or you may need to activate the original module

.The TypedConfigManager.php file is identical to https://cgit.drupalcode.org/drupal/tree/core/lib/Drupal/Core/Config/Type... and I restarted the server without success.

The update operations for the blocks ran successfully :
block_content 8600 hook_update_n Add 'reusable' field to 'block_content' entities.
block_content add_views post-update Adds a 'reusable' filter to _reusable Custom Block views. _filter

The drush command php with

$ service=\Drupal :: service ('config.typed');
get_class ($ service);

return :

=> Drupal\Core\Config\TypedConfigManager {# 917
     + "_ serviceId": "config.typed",
   }

And after a press on entry :

=> "Drupal\Core\Config\TypedConfigManager"

Commenting out the line $context->setTypedDataManager($old_context->getTypedDataManager());in the core/lib/Drupal/Core/Plugin/Context/Context::createFromContext() file does not solve the problem.

Thank you for considering this case

Steps to reproduce

None have been provided for starting at install Drupal core

Proposed resolution

Workaround

Running this command drush sqlq "update block_content_field_data set reusable = 1;" | drush cr fixed it. From #9 🐛 Custom blocks are no longer displayed and no longer appear in the custom block library Closed: cannot reproduce

or

the patch in #21 🐛 Custom blocks are no longer displayed and no longer appear in the custom block library Closed: cannot reproduce

Remaining tasks

User interface changes

API changes

Data model changes

Release notes snippet