Use MB Block php callback function to render CPT posts with MB blocks inserted

I have a solution that requires me to use a MB Block inserted into page or template to render CPT posts that use Gutenberg Editor.

The problem is that it appears I must use apply_filters('the_content', get_the_content()) to render them. However, using this, I assume causes the blocks being rendered to think current post id ($post_id) is the id of the CPT post ID where they were initially inserted. Is there a way to achieve this without specifically modifying the original MB blocks php callback?

The only work around I have now, is to use a shortcode to insert them, where I can directly use get_the_content(). In this case they will correctly know the current page id ($post_id).

Could you please advise if this is a global WordPress issue or if it is specific to using Metabox blocks in Block themes?

Any help or recommendations much appreciated.

thanks in advance.