Support forum breadcrumbs

forum.module, line 197 ff
function forum_nodeapi()

<?php
        // Breadcrumb navigation
        $breadcrumb[] = l(t('Home'), NULL);
        $breadcrumb[] = l($vocabulary->name, 'forum');
        if ($parents = taxonomy_get_parents_all($node->tid)) {
          $parents = array_reverse($parents);
          foreach ($parents as $p) {
            $breadcrumb[] = l($p->name, 'forum/'. $p->tid);
          }
        }
        drupal_set_breadcrumb($breadcrumb);
?>

This breadcrumb information is lost with crumbs.
Maybe there should be a plugin to restore "legacy" breadcrumbs set with drupal_set_breadcrumb?

Fixed in -dev (wait for packaging script).