Ticket #49086: 49086.diff

wp-includes/post.php

@@ -5614 +5614 @@
         // Delete all for any posts.
         delete_metadata( 'post', null, '_thumbnail_id', $post_id, true );
 
+        $site_icon_id = get_option( 'site_icon' );
+
+        if ( $site_icon_id && $post_id == $site_icon_id ) {
+                delete_option( 'site_icon' );
+        }
+
         wp_defer_comment_counting( true );
 
         $comment_ids = $wpdb->get_col( $wpdb->prepare( "SELECT comment_ID FROM $wpdb->comments WHERE comment_post_ID = %d", $post_id ) );