diff --git a/core/tests/Drupal/FunctionalJavascriptTests/DrupalSelenium2Driver.php b/core/tests/Drupal/FunctionalJavascriptTests/DrupalSelenium2Driver.php
index 8e8063343d..0e1a9b4c07 100644
--- a/core/tests/Drupal/FunctionalJavascriptTests/DrupalSelenium2Driver.php
+++ b/core/tests/Drupal/FunctionalJavascriptTests/DrupalSelenium2Driver.php
@@ -143,12 +143,15 @@ public function setValue($xpath, $value) {
     $result = $this->waitFor(10, function () use (&$not_clickable_exception, $xpath, $value) {
       try {
         // \Behat\Mink\Driver\Selenium2Driver::setValue() will call .blur() on
-        // the element, modify that to trigger the "input" event instead.
+        // the element, modify that to trigger the "input" and "change" events
+        // instead. They indicate the value has changed, rather than implying
+        // user focus changes.
         $this->executeJsOnXpath($xpath, <<<JS
 var node = {{ELEMENT}};
 var original = node.blur;
 node.blur = function() {
   node.dispatchEvent(new Event("input", {bubbles:true}));
+  node.dispatchEvent(new Event("change", {bubbles:true}));
   // Do not wait for the debounce, which only triggers the 'formUpdated` event
   // up to once every 0.3 seconds. In tests, no humans are typing, hence there
   // is no need to debounce.