diff -u b/src/EventSubscriber/GenericEventSubscriber.php b/src/EventSubscriber/GenericEventSubscriber.php
--- b/src/EventSubscriber/GenericEventSubscriber.php
+++ b/src/EventSubscriber/GenericEventSubscriber.php
@@ -118,7 +118,6 @@
 
     // Setup the execution state.
     $state = ExecutionState::create();
-    $context_values = [];
     foreach ($event_definition['context_definitions'] as $context_name => $context_definition) {
       // If this is a GenericEvent, get the context for the rule from the event
       // arguments.
@@ -130,13 +129,13 @@
 
     // Setup the execution state.
     $state = ExecutionState::create();
+    $context_values = [];
     foreach ($event_definition['context_definitions'] as $context_name => $context_definition) {
       // If there is a getter method set in the event definition, use that.
       // @see https://www.drupal.org/project/rules/issues/2762517
         $context_definition,
         $value
       );
-      $context_values[$context_name] = $value;
     }
 
     $components = $this->componentRepository->getMultiple($triggered_events, 'rules_event');
@@ -151,6 +150,7 @@
         $value = $getter->call($event, $context_name);
       }
       $state->setVariable($context_name, $context_definition, $value);
+      $context_values[$context_name] = $value;
     }
 
     $components = $this->componentRepository->getMultiple($triggered_events, 'rules_event');