reverted:
--- b/core/modules/node/src/Tests/NodeTranslationUITest.php
+++ a/core/modules/node/src/Tests/NodeTranslationUITest.php
@@ -21,15 +21,13 @@
    */
   protected $defaultCacheContexts = [
     'languages:language_interface',
+    'session',
     'theme',
     'route',
     'timezone',
     'url.path.parent',
     'url.query_args:_wrapper_format',
+    'user'
-    'user.roles',
-    // These two cache contexts are added by BigPipe.
-    'cookies:big_pipe_nojs',
-    'session.exists',
   ];
 
   /**
only in patch2:
unchanged:
--- a/core/modules/node/tests/src/Functional/NodeTranslationUITest.php
+++ b/core/modules/node/tests/src/Functional/NodeTranslationUITest.php
@@ -21,13 +21,15 @@ class NodeTranslationUITest extends ContentTranslationUITestBase {
    */
   protected $defaultCacheContexts = [
     'languages:language_interface',
-    'session',
     'theme',
     'route',
     'timezone',
     'url.path.parent',
     'url.query_args:_wrapper_format',
-    'user'
+    'user.roles',
+    // These two cache contexts are added by BigPipe.
+    'cookies:big_pipe_nojs',
+    'session.exists',
   ];
 
   /**