diff -r 7b1b88e27a20 -r 48c4eec2b7e6 wp/wp-includes/blocks/categories.php
--- a/wp/wp-includes/blocks/categories.php	Thu Sep 29 08:06:27 2022 +0200
+++ b/wp/wp-includes/blocks/categories.php	Fri Sep 05 18:40:08 2025 +0200
@@ -8,13 +8,15 @@
 /**
  * Renders the `core/categories` block on server.
  *
+ * @since 5.0.0
+ *
  * @param array $attributes The block attributes.
  *
  * @return string Returns the categories list/dropdown markup.
  */
 function render_block_core_categories( $attributes ) {
 	static $block_id = 0;
-	$block_id++;
+	++$block_id;
 
 	$args = array(
 		'echo'         => false,
@@ -22,6 +24,7 @@
 		'orderby'      => 'name',
 		'show_count'   => ! empty( $attributes['showPostCounts'] ),
 		'title_li'     => '',
+		'hide_empty'   => empty( $attributes['showEmpty'] ),
 	);
 	if ( ! empty( $attributes['showOnlyTopLevel'] ) && $attributes['showOnlyTopLevel'] ) {
 		$args['parent'] = 0;
@@ -62,6 +65,8 @@
 /**
  * Generates the inline script for a categories dropdown field.
  *
+ * @since 5.0.0
+ *
  * @param string $dropdown_id ID of the dropdown field.
  *
  * @return string Returns the dropdown onChange redirection script.
@@ -69,25 +74,25 @@
 function build_dropdown_script_block_core_categories( $dropdown_id ) {
 	ob_start();
 	?>
-	<script type='text/javascript'>
-	/* <![CDATA[ */
+	<script>
 	( function() {
 		var dropdown = document.getElementById( '<?php echo esc_js( $dropdown_id ); ?>' );
 		function onCatChange() {
 			if ( dropdown.options[ dropdown.selectedIndex ].value > 0 ) {
-				location.href = "<?php echo home_url(); ?>/?cat=" + dropdown.options[ dropdown.selectedIndex ].value;
+				location.href = "<?php echo esc_url( home_url() ); ?>/?cat=" + dropdown.options[ dropdown.selectedIndex ].value;
 			}
 		}
 		dropdown.onchange = onCatChange;
 	})();
-	/* ]]> */
 	</script>
 	<?php
-	return ob_get_clean();
+	return wp_get_inline_script_tag( str_replace( array( '<script>', '</script>' ), '', ob_get_clean() ) );
 }
 
 /**
  * Registers the `core/categories` block on server.
+ *
+ * @since 5.0.0
  */
 function register_block_core_categories() {
 	register_block_type_from_metadata(