If checkbox "All" for setting allowed content block types is ticked without ticking any of the content types (so that configuration array CONTENT_TYPE_allowed_content_block_types has only value 'content-block/all'), content blocks are not visible on Gutenberg editor.
1. Navigate to edit some content type eg. /admin/structure/types/manage/page
2. Tick Gutenberg experience -> Allowed content block types -> All
3. Create content block type (/admin/structure/block-content/add)
4. Create content block of the same type (/block/add)
5. Navigate to edit content with Gutenberg editor. It must be the same type as in step 1.
6. Look for the block created in step 4.
Take value 'content-block/all' into account inside BlocksController.
Active
3.0
Code
I have done the changes now all block types are showing and now we can also create block of these block types in the gutenberg editor.
Attaching screenchot for reference:
Please review.
Thanks