diff -r 7b1b88e27a20 -r 48c4eec2b7e6 wp/wp-includes/blocks/post-author.php
--- a/wp/wp-includes/blocks/post-author.php	Thu Sep 29 08:06:27 2022 +0200
+++ b/wp/wp-includes/blocks/post-author.php	Fri Sep 05 18:40:08 2025 +0200
@@ -8,6 +8,8 @@
 /**
  * Renders the `core/post-author` block on the server.
  *
+ * @since 5.9.0
+ *
  * @param  array    $attributes Block attributes.
  * @param  string   $content    Block default content.
  * @param  WP_Block $block      Block instance.
@@ -15,10 +17,11 @@
  */
 function render_block_core_post_author( $attributes, $content, $block ) {
 	if ( ! isset( $block->context['postId'] ) ) {
-		return '';
+		$author_id = get_query_var( 'author' );
+	} else {
+		$author_id = get_post_field( 'post_author', $block->context['postId'] );
 	}
 
-	$author_id = get_post_field( 'post_author', $block->context['postId'] );
 	if ( empty( $author_id ) ) {
 		return '';
 	}
@@ -28,11 +31,23 @@
 		$attributes['avatarSize']
 	) : null;
 
+	$link        = get_author_posts_url( $author_id );
+	$author_name = get_the_author_meta( 'display_name', $author_id );
+	if ( ! empty( $attributes['isLink'] && ! empty( $attributes['linkTarget'] ) ) ) {
+		$author_name = sprintf( '<a href="%1$s" target="%2$s">%3$s</a>', esc_url( $link ), esc_attr( $attributes['linkTarget'] ), $author_name );
+	}
+
 	$byline  = ! empty( $attributes['byline'] ) ? $attributes['byline'] : false;
-	$classes = array_merge(
-		isset( $attributes['itemsJustification'] ) ? array( 'items-justified-' . $attributes['itemsJustification'] ) : array(),
-		isset( $attributes['textAlign'] ) ? array( 'has-text-align-' . $attributes['textAlign'] ) : array()
-	);
+	$classes = array();
+	if ( isset( $attributes['itemsJustification'] ) ) {
+		$classes[] = 'items-justified-' . $attributes['itemsJustification'];
+	}
+	if ( isset( $attributes['textAlign'] ) ) {
+		$classes[] = 'has-text-align-' . $attributes['textAlign'];
+	}
+	if ( isset( $attributes['style']['elements']['link']['color']['text'] ) ) {
+		$classes[] = 'has-link-color';
+	}
 
 	$wrapper_attributes = get_block_wrapper_attributes( array( 'class' => implode( ' ', $classes ) ) );
 
@@ -40,7 +55,7 @@
 	( ! empty( $attributes['showAvatar'] ) ? '<div class="wp-block-post-author__avatar">' . $avatar . '</div>' : '' ) .
 	'<div class="wp-block-post-author__content">' .
 	( ! empty( $byline ) ? '<p class="wp-block-post-author__byline">' . wp_kses_post( $byline ) . '</p>' : '' ) .
-	'<p class="wp-block-post-author__name">' . get_the_author_meta( 'display_name', $author_id ) . '</p>' .
+	'<p class="wp-block-post-author__name">' . $author_name . '</p>' .
 	( ! empty( $attributes['showBio'] ) ? '<p class="wp-block-post-author__bio">' . get_the_author_meta( 'user_description', $author_id ) . '</p>' : '' ) .
 	'</div>' .
 	'</div>';
@@ -48,6 +63,8 @@
 
 /**
  * Registers the `core/post-author` block on the server.
+ *
+ * @since 5.9.0
  */
 function register_block_core_post_author() {
 	register_block_type_from_metadata(