Posts matching filters fix for Beaver Builder Posts Grid + Content Grid

code.php

<?php // <- Ignore this

// Copy the code below and paste it to your child theme's functions.php file

add_filter( 'fl_builder_loop_query_args', function( $args ) {
  	$settings  = $args['settings'];
  	$post_type = $args['post_type'];
  
 	$post__in  = $post__not_in = array();

	foreach ( (array) $post_type as $type ) {
		// Post in/not in query.
		if ( isset( $settings->{'posts_' . $type} ) ) {

			$ids = $settings->{'posts_' . $type};
			$arg = 'post__in';

			// Set to NOT IN if matching is present and set to 0.
			if ( isset( $settings->{'posts_' . $type . '_matching'} ) ) {
				if ( ! $settings->{'posts_' . $type . '_matching'} ) {
					$arg = 'post__not_in';
				}
			}

			// Add the args if we have IDs.
			if ( ! empty( $ids ) && 'post__in' === $arg ) {
				$post__in = array_merge( $post__in, explode( ',', $ids ) );
			}
			if ( ! empty( $ids ) && 'post__not_in' === $arg ) {
				$post__not_in = array_merge( $post__not_in, explode( ',', $ids ) );
			}
		}
	}
		
	if ( ! empty( $post__in ) ) {
		$args['post__in'] = $post__in;
	}
		
	if ( ! empty( $post__not_in ) ) {
		$args['post__not_in'] = $post__not_in;
	}
	
	return $args;
} );