Francesco Placella
--- a/core/modules/system/src/Controller/AssetControllerBase.php
+++ b/core/modules/system/src/Controller/AssetControllerBase.php
    // from filling the disk, while still serving aggregates that may be
    // referenced in cached HTML.
    if (hash_equals($generated_hash, $received_hash)) {
-      $this->dumper->dumpToUri($data, $this->assetType, $uri);
+      $headers = [
+        'Cache-control' => static::CACHE_CONTROL,
+        'Content-Type' => $this->contentType,
+      ];
+      $uri = $this->dumper->dumpToUri($data, $this->assetType, $uri);
+      if (file_exists($uri . '.gz')) {