I also do feel very lost, don't understand how to display custom fields of a post inside the post using shortcodes.
Your forum is too crowded for finding relevant info, your documentation lacks real-life examples.
I have created 2 custom fields "author" and "year".
I have created a now post and entered "peter" and "2004" into those fields.
I have inserted a shortcode inside the post: [rwmb_meta id="field_id"] as explained in your docs on https://docs.metabox.io/displaying-fields/, but none of the fields are being displayed ๐
Why you make it sooo complicated? Please help better to display fields via gutenberg via shortcodes, thanks.
Sascha