Ticket #42096: 42096.patch

src/wp-includes/class-wp-term-query.php

@@ -483 +483 @@
                         ( is_string( $args['slug'] ) && 0 !== strlen( $args['slug'] ) )
                 ) {
                         if ( is_array( $args['slug'] ) ) {
-                                $slug = array_map( 'sanitize_title', $args['slug'] );
+                                $slug = array_map( 'sanitize_title_for_query', $args['slug'] );
                                 $this->sql_clauses['where']['slug'] = "t.slug IN ('" . implode( "', '", $slug ) . "')";
                         } else {
-                                $slug = sanitize_title( $args['slug'] );
+                                $slug = sanitize_title_for_query( $args['slug'] );
                                 $this->sql_clauses['where']['slug'] = "t.slug = '$slug'";
                         }
                 }

src/wp-includes/default-filters.php

@@ -74 +74 @@
 }
 
 // Slugs
-add_filter( 'pre_term_slug', 'sanitize_title' );
+add_filter( 'pre_term_slug', 'sanitize_title_for_query' );
 add_filter( 'wp_insert_post_data', '_wp_customize_changeset_filter_insert_post_data', 10, 2 );
 
 // Keys