diff -u b/core/lib/Drupal/Core/Menu/LocalTaskManager.php b/core/lib/Drupal/Core/Menu/LocalTaskManager.php
--- b/core/lib/Drupal/Core/Menu/LocalTaskManager.php
+++ b/core/lib/Drupal/Core/Menu/LocalTaskManager.php
@@ -293,8 +293,8 @@
         $route_parameters = $child->getRouteParameters($this->routeMatch);
 
         // Find out whether the user has access to the task.
-        $access = $this->accessManager->checkNamedRoute($route_name, $route_parameters, $this->account);
-        if ($access) {
+        $access = $this->accessManager->checkNamedRoute($route_name, $route_parameters, $this->account, TRUE);
+        if ($access->isAllowed()) {
           $active = $this->isRouteActive($current_route_name, $route_name, $route_parameters);
 
           // The plugin may have been set active in getLocalTasksForRoute() if
@@ -305,8 +305,8 @@
         $route_parameters = $child->getRouteParameters($this->routeMatch);
 
         // Find out whether the user has access to the task.
-        $access = $this->accessManager->checkNamedRoute($route_name, $route_parameters, $this->account, TRUE);
-        if ($access->isAllowed()) {
+        $access = $this->accessManager->checkNamedRoute($route_name, $route_parameters, $this->account);
+        if ($access) {
           $active = $this->isRouteActive($current_route_name, $route_name, $route_parameters);
 
           // The plugin may have been set active in getLocalTasksForRoute() if
@@ -315,6 +315,7 @@
             '#access' => $access,
           );
         }
+        \Drupal::service('renderer')->addDependency($build, $access);
       }
     }
     return $build;
@@ -327,7 +328,6 @@
             '#access' => $access,
           );
         }
-        \Drupal::service('renderer')->addDependency($build, $access);
       }
     }
     return $build;
diff -u b/core/modules/system/src/Plugin/Block/SystemPageActionsBlock.php b/core/modules/system/src/Plugin/Block/SystemPageActionsBlock.php
--- b/core/modules/system/src/Plugin/Block/SystemPageActionsBlock.php
+++ b/core/modules/system/src/Plugin/Block/SystemPageActionsBlock.php
@@ -101,7 +101,7 @@
     $route_name = $request->attributes->get(RouteObjectInterface::ROUTE_NAME);
     $action_links = $this->localActionManager->getActionsForRoute($route_name) + $links['actions'];
     if (empty($action_links)) {
-      return FALSE;
+      return [];
     }
 
     $build['action_links'] = $action_links;
@@ -128,7 +128,7 @@
    */
   public function getCacheMaxAge() {
     // @todo Make me cacheable now that https://drupal.org/node/2287071 has landed.
-    return FALSE;
+    return 0;
   }
 
 }
diff -u b/core/modules/system/src/Plugin/Block/SystemPageTabsBlock.php b/core/modules/system/src/Plugin/Block/SystemPageTabsBlock.php
--- b/core/modules/system/src/Plugin/Block/SystemPageTabsBlock.php
+++ b/core/modules/system/src/Plugin/Block/SystemPageTabsBlock.php
@@ -72,7 +72,7 @@
   public function build() {
     $tabs = menu_local_tabs();
     if (empty($tabs)) {
-      return FALSE;
+      return [];
     }
     $build['tabs'] = $tabs;
     return $build;
@@ -97,7 +97,7 @@
    */
   public function getCacheMaxAge() {
     // @todo Make cacheable now that https://drupal.org/node/2287071 has landed.
-    return FALSE;
+    return 0;
   }
 
 }
diff -u b/core/modules/system/system.module b/core/modules/system/system.module
--- b/core/modules/system/system.module
+++ b/core/modules/system/system.module
@@ -775,14 +775,6 @@
       }
       break;
 
-    case 'system_page_actions_block':
-      $variables['action_links'] = $variables['content']['action_links'];
-      break;
-
-    case 'system_page_tabs_block':
-      $variables['tabs'] = $variables['content']['tabs'];
-      break;
-
     case 'system_powered_by_block':
       $variables['attributes']['role'] = 'complementary';
       break;
@@ -798,6 +790,14 @@
       }
       break;
 
+    case 'system_page_actions_block':
+      $variables['action_links'] = $variables['content']['action_links'];
+      break;
+
+    case 'system_page_tabs_block':
+      $variables['tabs'] = $variables['content']['tabs'];
+      break;
+
     case 'system_powered_by_block':
       $variables['attributes']['role'] = 'complementary';
       break;