diff -u b/core/modules/language/src/Plugin/LanguageNegotiation/LanguageNegotiationContentEntity.php b/core/modules/language/src/Plugin/LanguageNegotiation/LanguageNegotiationContentEntity.php
--- b/core/modules/language/src/Plugin/LanguageNegotiation/LanguageNegotiationContentEntity.php
+++ b/core/modules/language/src/Plugin/LanguageNegotiation/LanguageNegotiationContentEntity.php
@@ -230,8 +230,8 @@
   protected function meetsContentEntityRoutesCondition($outbound_route_name, Request $request) {
     $storage = isset($this->paths[$request]) ? $this->paths[$request] : [];
     if (!isset($storage[$outbound_route_name])) {
-      $content_entity_path_for_current_route = $this->getContentEntityPathForCurrentRequest($request);
-      $meets_condition = $content_entity_path_for_current_route ? $this->meetsOutboundRouteToCurrentContentEntityCondition($outbound_route_name, $request) : FALSE;
+      $content_entity_type_id_for_current_route = $this->getContentEntityTypeIdForCurrentRequest($request);
+      $meets_condition = $content_entity_type_id_for_current_route ? $this->meetsOutboundRouteToCurrentContentEntityCondition($outbound_route_name, $request) : FALSE;
       $storage[$outbound_route_name] = $meets_condition;
       $this->paths[$request] = $storage;
     }
@@ -240,29 +240,28 @@
   }
 
   /**
-   * Returns the content entity path from the current request.
+   * Returns the content entity type id from the current request for the route.
    *
    * @param \Symfony\Component\HttpFoundation\Request $request
    *   The HttpRequest object representing the current request.
    *
    * @return string
-   *   The path pattern for the content entity from the request.
+   *   The entity type id for the route from the request.
    */
-  protected function getContentEntityPathForCurrentRequest(Request $request) {
-    $content_entity_path_for_current_route = '';
+  protected function getContentEntityTypeIdForCurrentRequest(Request $request) {
+    $content_entity_type_id_for_current_route = '';
 
     if ($current_route_name = $request->attributes->get(RouteObjectInterface::ROUTE_NAME)) {
       $current_route_path = $this->routeProvider->getRouteByName($current_route_name)->getPath();
-      $content_entity_path_for_current_route = isset($this->getContentEntityPaths()[$current_route_path]) ? $this->getContentEntityPaths()[$current_route_path] : '';
+      $content_entity_type_id_for_current_route = isset($this->getContentEntityPaths()[$current_route_path]) ? $this->getContentEntityPaths()[$current_route_path] : '';
     }
 
-    return $content_entity_path_for_current_route;
+    return $content_entity_type_id_for_current_route;
   }
 
   /**
    * Determines if outbound route points to the current entity.
    *
-   *
    * @param $outbound_route_name
    *   The route name for the current outbound url being processed.
    * @param \Symfony\Component\HttpFoundation\Request $request
@@ -273,9 +272,9 @@
    *   FALSE otherwise.
    */
   protected function meetsOutboundRouteToCurrentContentEntityCondition($outbound_route_name, Request $request) {
-    if ($content_entity_path_for_current_route = $this->getContentEntityPathForCurrentRequest($request)) {
+    if ($content_entity_type_id_for_current_route = $this->getContentEntityTypeIdForCurrentRequest($request)) {
       $outbound_route_path = $this->routeProvider->getRouteByName($outbound_route_name)->getPath();
-      if (!empty($this->getContentEntityPaths()[$outbound_route_path]) && $content_entity_path_for_current_route == $this->getContentEntityPaths()[$outbound_route_path]) {
+      if (!empty($this->getContentEntityPaths()[$outbound_route_path]) && $content_entity_type_id_for_current_route == $this->getContentEntityPaths()[$outbound_route_path]) {
         return TRUE;
       }
     }