Deactivates Gutenberg editor on custom post types not explicitly returning true from function hooked to `post_type_supports_convert_to_blocks` filter about convert-to-blocks

[dsawardekar]

@adriantoll Thanks for reporting this issue. I've identified this call as the cause of the issue,

convert-to-blocks/includes/ConvertToBlocks/ClassicEditorSupport.php

Line 48 in 3a5c066

if ( ! $this->container->post_supports_convert_to_blocks( $post ) ) {

If the post_type_supports hook return is false it exits early. We'll add a new hook to the plugin to override this behavior. The if conditions will compute the return value and use a filter like below before returning from the enable_block_editor function. Something on the lines of,

return apply_filters( 'convert_to_blocks_enable_block_editor', $result );

A workaround you can use right now is to override this behavior manually by adding a higher priority use_block_editor_for_post action hook. And then returning true for the respective post type.

cc @jeffpaul

[adriantoll]

Thanks for the update @dsawardekar. I'm actually happy for this to run on all post types that use the block editor, so for now I've just manually listed those in the post_type_supports_convert_to_blocks hook.