diff --git a/.github/workflows/behat.yml b/.github/workflows/behat.yml
index 37667b5a692..f273e4c5896 100644
--- a/.github/workflows/behat.yml
+++ b/.github/workflows/behat.yml
@@ -394,6 +394,11 @@ jobs:
             mv html/profiles/contrib/social/tests/behat/logs/* $OUTPUT_FOLDER/
           fi
 
+          # Move files from the mail spool to the output folder if they exist
+          if (shopt -s nullglob; f=(html/profiles/contrib/social/tests/behat/mail-spool/*); ((${#f[@]}))); then
+            mv html/profiles/contrib/social/tests/behat/mail-spool/* $OUTPUT_FOLDER/
+          fi
+
           # Dump the database with the state of the test failure to allow for
           # local inspection.
           drush sql-dump > $OUTPUT_FOLDER/at-test-failure.sql
diff --git a/modules/social_features/social_search/config/install/search_api.index.social_all.yml b/modules/social_features/social_search/config/install/search_api.index.social_all.yml
index 91a194fb57f..52bc1afffb1 100644
--- a/modules/social_features/social_search/config/install/search_api.index.social_all.yml
+++ b/modules/social_features/social_search/config/install/search_api.index.social_all.yml
@@ -245,6 +245,7 @@ processor_settings:
   ignorecase:
     all_fields: true
     fields:
+      - language_with_fallback
       - field_group_description
       - field_group_location
       - field_profile_first_name
@@ -332,6 +333,7 @@ processor_settings:
   transliteration:
     all_fields: true
     fields:
+      - language_with_fallback
       - field_group_description
       - field_group_location
       - field_profile_first_name
diff --git a/modules/social_features/social_search/config/install/views.view.search_all.yml b/modules/social_features/social_search/config/install/views.view.search_all.yml
index acb4f6e596c..512346c48dc 100644
--- a/modules/social_features/social_search/config/install/views.view.search_all.yml
+++ b/modules/social_features/social_search/config/install/views.view.search_all.yml
@@ -153,14 +153,13 @@ display:
             link_to_item: false
             multi_separator: ', '
       filters:
-        language_with_fallback:
-          id: language_with_fallback
+        search_api_language:
+          id: search_api_language
           table: search_api_index_social_all
           field: language_with_fallback
           relationship: none
           group_type: group
           admin_label: ''
-          plugin_id: search_api_language
           operator: in
           value:
             '***LANGUAGE_language_interface***': '***LANGUAGE_language_interface***'
@@ -193,6 +192,7 @@ display:
             default_group: All
             default_group_multiple: { }
             group_items: { }
+          plugin_id: search_api_language
       sorts:
         search_api_relevance:
           id: search_api_relevance
diff --git a/modules/social_features/social_search/config/install/views.view.search_content.yml b/modules/social_features/social_search/config/install/views.view.search_content.yml
index 727307f81d1..4bb47a0945c 100644
--- a/modules/social_features/social_search/config/install/views.view.search_content.yml
+++ b/modules/social_features/social_search/config/install/views.view.search_content.yml
@@ -280,14 +280,13 @@ display:
                   min: ''
                   max: ''
           plugin_id: search_api_date
-        language_with_fallback:
-          id: language_with_fallback
+        search_api_language:
+          id: search_api_language
           table: search_api_index_social_content
           field: language_with_fallback
           relationship: none
           group_type: group
           admin_label: ''
-          plugin_id: search_api_language
           operator: in
           value:
             '***LANGUAGE_language_interface***': '***LANGUAGE_language_interface***'
@@ -300,7 +299,7 @@ display:
             use_operator: false
             operator: ''
             operator_limit_selection: false
-            operator_list: { }
+            operator_list: {  }
             identifier: ''
             required: false
             remember: false
@@ -318,8 +317,9 @@ display:
             multiple: false
             remember: false
             default_group: All
-            default_group_multiple: { }
-            group_items: { }
+            default_group_multiple: {  }
+            group_items: {  }
+          plugin_id: search_api_language
       sorts:
         search_api_relevance:
           id: search_api_relevance
diff --git a/modules/social_features/social_search/config/install/views.view.search_groups.yml b/modules/social_features/social_search/config/install/views.view.search_groups.yml
index 5246d3085af..8df90fefd33 100644
--- a/modules/social_features/social_search/config/install/views.view.search_groups.yml
+++ b/modules/social_features/social_search/config/install/views.view.search_groups.yml
@@ -172,14 +172,13 @@ display:
             group_items: {  }
           reduce_duplicates: false
           plugin_id: search_api_options
-        language_with_fallback:
-          id: language_with_fallback
+        search_api_language:
+          id: search_api_language
           table: search_api_index_social_groups
           field: language_with_fallback
           relationship: none
           group_type: group
           admin_label: ''
-          plugin_id: search_api_language
           operator: in
           value:
             '***LANGUAGE_language_interface***': '***LANGUAGE_language_interface***'
@@ -192,7 +191,7 @@ display:
             use_operator: false
             operator: ''
             operator_limit_selection: false
-            operator_list: { }
+            operator_list: {  }
             identifier: ''
             required: false
             remember: false
@@ -210,8 +209,9 @@ display:
             multiple: false
             remember: false
             default_group: All
-            default_group_multiple: { }
-            group_items: { }
+            default_group_multiple: {  }
+            group_items: {  }
+          plugin_id: search_api_language
       sorts:
         search_api_relevance:
           id: search_api_relevance
diff --git a/modules/social_features/social_search/social_search.install b/modules/social_features/social_search/social_search.install
index 6b52cf26110..2aea01bc7b8 100644
--- a/modules/social_features/social_search/social_search.install
+++ b/modules/social_features/social_search/social_search.install
@@ -291,3 +291,35 @@ function social_search_update_11402(): string {
   // Output logged messages to related channel of update execution.
   return $updateHelper->logger()->output();
 }
+
+/**
+ * Revert search_api_language filter name/id change.
+ */
+function social_search_update_11403() : void {
+  // In social_search_update_11402
+  // (https://github.com/goalgorilla/open_social/pull/3470/) we changed the
+  // search_api_language filter to a language_with_fallback filter to ensure
+  // that users could find matching content in different languages if no version
+  // in their own language was available. However, this also changed the IDs of
+  // the filter which can break existing sites that might rely on that filter.
+  // Below we go through the views and change the filter back to the ID it had,
+  // just with the new field added to the index.
+  $views = [
+    "views.view.search_all",
+    "views.view.search_content",
+    "views.view.search_group",
+  ];
+
+  foreach ($views as $view) {
+    $config = \Drupal::configFactory()->getEditable($view);
+    $display = $config->get("display");
+
+    $filter = $display['default']['display_options']['filters']['language_with_fallback'];
+    $filter['id'] = "search_api_language";
+    $display['default']['display_options']['filters']["search_api_language"] = $filter;
+    unset($display['default']['display_options']['filters']['language_with_fallback']);
+
+    $config->set('display', $display);
+    $config->save(TRUE);
+  }
+}