I’m doing the plugin for ThemeForrest and in their guidelines they ask to not remove the wpautop filter. The guys that will do the review are not gonna investigate too much the problem – they will just reject it. That’s why i was trying to not use this solution. The alternative will be to use
get_post_field( 'post_excerpt',..) and see if the Gutenberg team will consider this a issue or not.
Thank you again for taking the time to look over this.