I managed to fix this by:
<?php
function the_breadcrumb() {
global $post;
$post_type = $post->post_type;
echo '<ul id="breadcrumbs">';
if(get_post_type() == 'forum' OR get_post_type() == 'topic' OR get_post_type() == 'reply') {
echo '<li><a href="';
echo get_option('home');
echo '">';
echo '<i class="ts-awesome-home" style="font-size:14px;letter-spacing: 2px;"></i> Home';
echo '</a></li><li class="separator"> / </li>';
echo '<a href="https://link">Forum</a>';
echo ' / ';
echo the_title();
}
elseif (!is_home()) {
echo '<li><a href="';
echo get_option('home');
echo '">';
echo '<i class="ts-awesome-home" style="font-size:14px;letter-spacing: 2px;"></i> Home';
echo '</a></li><li class="separator"> / </li>';
if (is_category() || is_single()) {
echo '<li>';
the_category(' </li><li class="separator"> / </li><li> ');
if (is_single()) {
echo '</li><li class="separator"> / </li><li>';
the_title();
echo '</li>';
}
}
elseif (is_page()) {
if($post->post_parent){
$anc = get_post_ancestors( $post->ID );
$title = get_the_title();
foreach ( $anc as $ancestor ) {
$output="<li><a href="".get_permalink($ancestor).'" title="'.get_the_title($ancestor).'">'.get_the_title($ancestor).'</a></li> <li class="separator">/</li>'.$output;
}
echo $output;
echo '<span title="'.$title.'"> '.$title.'</span>';
} else {
echo '<li><span> '.get_the_title().'</span></li>';
}
}
}
}
?>