Issue #3052574: Facets with AJAX not working in most of situations

src/Controller/FacetBlockAjaxController.php

@@ -6,6 +6,7 @@ use Drupal\Core\Ajax\AjaxResponse;
 use Drupal\Core\Ajax\InvokeCommand;
 use Drupal\Core\Ajax\ReplaceCommand;
 use Drupal\Core\Block\BlockManager;
+use Drupal\Core\Block\Plugin\Block\Broken;
 use Drupal\Core\Controller\ControllerBase;
 use Drupal\Core\Path\CurrentPathStack;
 use Drupal\Core\PathProcessor\PathProcessorManager;
@@ -184,6 +185,16 @@ class FacetBlockAjaxController extends ControllerBase {
             }
           }
         }
+        elseif ($block_instance instanceof Broken) {
+          $block_entity = $this->storage->load($block_id);
+          if ($block_entity) {
+            $block_view = $this->entityTypeManager
+              ->getViewBuilder('block')
+              ->view($block_entity);
+            $block_view = (string) $this->renderer->renderPlain($block_view);
+            $response->addCommand(new ReplaceCommand($block_selector, $block_view));
+          }
+        }
       }
     }