diff --git a/core/modules/forum/lib/Drupal/forum/ForumBreadcrumbBuilder.php b/core/modules/forum/lib/Drupal/forum/ForumBreadcrumbBuilder.php
index ee5267d..e30f985 100644
--- a/core/modules/forum/lib/Drupal/forum/ForumBreadcrumbBuilder.php
+++ b/core/modules/forum/lib/Drupal/forum/ForumBreadcrumbBuilder.php
@@ -87,7 +87,7 @@ protected function forumPostBreadcrumb($node) {
     if ($parents = taxonomy_term_load_parents_all($node->forum_tid)) {
       $parents = array_reverse($parents);
       foreach ($parents as $parent) {
-        $breadcrumb[] = l($parent->label(), 'forum/' . $parent->tid);
+        $breadcrumb[] = l($parent->label(), 'forum/' . $parent->id());
       }
     }
     return $breadcrumb;
diff --git a/core/modules/views/lib/Drupal/views/ViewExecutable.php b/core/modules/views/lib/Drupal/views/ViewExecutable.php
index c82e826..8ba990a 100644
--- a/core/modules/views/lib/Drupal/views/ViewExecutable.php
+++ b/core/modules/views/lib/Drupal/views/ViewExecutable.php
@@ -1666,7 +1666,7 @@ public function getBreadcrumb($set = FALSE) {
       }
 
       if ($set) {
-        if ($base) {
+        if ($base && drupal_set_breadcrumb()) {
           $breadcrumb = array_merge(drupal_set_breadcrumb(), $breadcrumb);
         }
         drupal_set_breadcrumb($breadcrumb);