Issue #3083723 by gabesullice: Try to respect misbehaving module cacheability

src/EventSubscriber/EarlyRenderingControllerWrapperSubscriber.php

@@ -2,6 +2,7 @@
 
 namespace Drupal\jsonapi_earlyrendering_workaround\EventSubscriber;
 
+use Drupal\Core\Cache\CacheableResponseInterface;
 use Drupal\Core\EventSubscriber\EarlyRenderingControllerWrapperSubscriber as OriginalEarlyRenderingControllerWrapperSubscriber;
 use Drupal\Core\Render\RenderContext;
 
@@ -18,9 +19,14 @@ class EarlyRenderingControllerWrapperSubscriber extends OriginalEarlyRenderingCo
 
   protected function wrapControllerExecutionInRenderContext($controller, array $arguments) {
     if(get_class($controller[0]) === "Drupal\jsonapi\Controller\EntityResource"){
-      return $this->renderer->executeInRenderContext(new RenderContext(), function () use ($controller, $arguments) {
+      $context = new RenderContext();
+      $response = $this->renderer->executeInRenderContext($context, function () use ($controller, $arguments) {
         return call_user_func_array($controller, $arguments);
       });
+      if (!$context->isEmpty() && $response instanceof CacheableResponseInterface) {
+        $response->addCacheableDependency($context->pop());
+      }
+      return $response;
     }
     return $this->originalService->wrapControllerExecutionInRenderContext($controller, $arguments);
   }