I'm trying to construct a breadcrumb trail where some of the paths consist of parent/child custom post types.

For example:

else if ( is_singular( 'resort' ) ) {
    global $post;
    $post_data = get_post($post->post_parent);
    $parent_title = $post_data->post_title;
    $parent_slug = $post_data->post_name;

    echo '<li><a href="/destinations/" title="' . __('Destinations', 'bookyourtravel') . '">' . __('Destinations', 'bookyourtravel') . '</a></li>';
    echo '<li><a href="/destinations/' . $parent_slug . '/" title="' . $parent_title . ' Villas">' . $parent_title . '</li>';
}

Whilst this outputs exactly what I'm after, for example:

Destinations > $parent_title

When I try to get the current page's title for the last path in the breadcrumb simply with:

echo "<li>";
echo the_title();
echo "</li>";

It ends up duplicating the second destination > $parent_title path above...

I attach a screenshot of the source code to illustrate this problem.

It seems by the usage of the_title(), it seems to wrap any mention of the current page title (Playa Blanca) in a link which links back to the parent page (Lanzarote) which hopefully can be seen in the image.

Why can't the above just echo the current page title (the_title()) at the end of the breadcrumb trail properly?

I just want 'Playa Blanca' to be at the end of the breadcrumb trail not linked and not interfering with anything else on the page.