remove-nbsps.php

<?php
/**
 * Remove &nbsp;'s
 * @link https://core.trac.wordpress.org/ticket/31157
 * @link https://core.trac.wordpress.org/ticket/31676
 * 
 */
add_filter( 'the_content', 'ac_remove_nbsps', 10 ); // Adjust priorities if necessary
add_filter( 'widget_text', 'ac_remove_nbsps', 10 );

function ac_remove_nbsps( $contentt ) {
	return str_replace( "\xc2\xa0", ' ', $content );
}