Make page title a link to itself in Genesis breadcrumbs - Breadcrumbs don't link to the current post/page but a forum member wanted to. It was an irresistible challenge. https://www.damiencarbery.com/2019/01/make-page-title-a-link-in-genesis-breadcrumbs/

breadcrumbs-default-markup.html

<div class="breadcrumb" itemscope itemtype="https://schema.org/BreadcrumbList">
	You are here:
	<span class="breadcrumb-link-wrap" itemprop="itemListElement" itemscope itemtype="https://schema.org/ListItem">
		<a class="breadcrumb-link" href="http://localhost/essence-pro/" itemprop="item">
			<span class="breadcrumb-link-text-wrap" itemprop="name">
				Home
			</span>
		</a>
		<meta itemprop="position" content="1">
	</span>
	<span aria-label="breadcrumb separator">/</span>
	<span class="breadcrumb-link-wrap" itemprop="itemListElement" itemscope itemtype="https://schema.org/ListItem">
		<a class="breadcrumb-link" href="http://localhost/essence-pro/layouts/" itemprop="item">
			<span class="breadcrumb-link-text-wrap" itemprop="name">
				Page Layouts
			</span>
		</a>
		<meta itemprop="position" content="2">
	</span>
	<span aria-label="breadcrumb separator">/</span>
	Sidebar / Content
</div>

genesis-breadcrumb-link-current-page.php

<?php
/*
Plugin Name: Make page title a link in Genesis breadcrumbs
Plugin URI: https://www.damiencarbery.com/2019/01/make-page-title-a-link-in-genesis-breadcrumbs/
Description: Make page title a link to itself in Genesis breadcrumbs. Asked in https://www.facebook.com/groups/genesiswp/permalink/2252172021500649/
Author: Damien Carbery
Version: 0.1
*/

add_filter( 'genesis_single_crumb', 'dcwd_single_crumb', 10, 2 );
add_filter( 'genesis_page_crumb', 'dcwd_single_crumb', 10, 2 );
function dcwd_single_crumb( $crumb, $args ) {
	// Create a link to the current page or post.
	$title = get_the_title();
	$link = sprintf( '<span class="breadcrumb-link-wrap" itemprop="itemListElement" itemscope itemtype="https://schema.org/ListItem"><a class="breadcrumb-link" href="%s" itemprop="item"><span class="breadcrumb-link-text-wrap" itemprop="name">%s</span></a></span>', get_permalink(), $title );

	// Find the page/post title in $crumb and replace it with the link.
	$title_position = strrpos( $crumb, $title );
	if ( $title_position !== false ) {
		$crumb = substr_replace( $crumb, $link, $title_position, strlen( $title ) );
	}

	return $crumb;
}