BB formatting not loading in post feed

SO, I googled this issue a lot, and found out what the problem I was having -was-, and I even found what was meant to be a solution… but it doesn’t seem to work, and the solution was a couple years old so I don’t know if it’s now outdated.
I am aware that (for some reason) BB formatting is not global. This means that if I make a POST with an accordian or a tabs section, and then have a seperate PAGE with a posts feed module, the POSTS all show in the feed… but only in plain text, and without the accordion/tabs formatting.

The solution I found seemed to be :

function my_global_builder_posts( $post_ids ) {
$post_ids[] = ‘123’;
$post_ids[] = ‘456’;
$post_ids[] = ‘789’;
return $post_ids;
}
add_filter( ‘fl_builder_global_posts’, ‘my_global_builder_posts’ );

I changed the ID numbers to the ID of the POST, but nothing changed on the PAGE. I also tried using the PAGE ID (just in case) but that didn’t work either.

I pasted the above code into my functions.php file on my child theme, which I assumed was correct.

Am I missing something?