Merge branch '5.4' into 6.3

* 5.4:
  webpack encore reset entrypointlookup

Author: javiereguiluz

frontend/encore/advanced-config.rst

@@ -144,6 +144,62 @@ functions to specify which build to use:
     {{ encore_entry_script_tags('mobile', null, 'secondConfig') }}
     {{ encore_entry_link_tags('mobile', null, 'secondConfig') }}
 
+Avoid Missing CSS When Rendering Multiple Templates
+---------------------------------------------------
+
+When you render two or more templates in the same request, such as two emails,
+you should call the ``reset()`` method on the ``EntrypointLookupInterface`` interface.
+To do this, inject the ``EntrypointLookupInterface`` interface::
+
+    public function __construct(EntrypointLookupInterface $entryPointLookup) {}
+
+    public function send() {
+        $this->twig->render($emailOne);
+        $this->entryPointLookup->reset();
+        $this->render($emailTwo);
+    }
+
+If you are using multiple Webpack configurations (e.g. one for the admin and one
+for emails) you will need to inject the right ``EntrypointLookupInterface`` service.
+Use the following command to find the right service:
+
+.. code-block:: terminal
+
+    $ php bin/console console debug:container entrypoint_lookup
+
+    # You will see a result similar to this:
+    Select one of the following services to display its information:
+    [0] webpack_encore.entrypoint_lookup_collection
+    [1] webpack_encore.entrypoint_lookup.cache_warmer
+    [2] webpack_encore.entrypoint_lookup[_default]
+    [3] webpack_encore.entrypoint_lookup[admin]
+    [4] webpack_encore.entrypoint_lookup[email]
+
+In this example, the configuration related to the ``email`` configuration is
+the one called ``webpack_encore.entrypoint_lookup[email]``.
+
+To inject this service into your class, use the ``bind`` option:
+
+.. code-block:: yaml
+
+    # config/services.yaml
+    services:
+        _defaults
+            bind:
+                Symfony\WebpackEncoreBundle\Asset\EntrypointLookupInterface $entryPointLookupEmail: '@webpack_encore.entrypoint_lookup[email]'
+
+Now you can inject your service into your class:
+
+.. code-block:: php
+
+    public function __construct(EntrypointLookupInterface $entryPointLookupEmail) {}
+
+    public function send() {
+        $this->twig->render($emailOne);
+        $this->entryPointLookupEmail->reset();
+        $this->render($emailTwo);
+    }
+
 Generating a Webpack Configuration Object without using the Command-Line Interface
 ----------------------------------------------------------------------------------