reverted:
--- b/tests/src/Functional/EntityReferenceFunctionalTestBase.php
+++ a/tests/src/Functional/EntityReferenceFunctionalTestBase.php
@@ -2,7 +2,6 @@
 
 namespace Drupal\Tests\entityreference_filter\Functional;
 
-use PHPUnit\Framework\Attributes\Group;
 use Drupal\Tests\BrowserTestBase;
 use Drupal\Tests\entityreference_filter\Traits\EntityReferenceFilterTrait;
 
@@ -11,7 +10,6 @@
  *
  * @group entityreference_filter
  */
-#[Group('entityreference_filter')]
 abstract class EntityReferenceFunctionalTestBase extends BrowserTestBase {
 
   use EntityReferenceFilterTrait;
reverted:
--- b/tests/src/Functional/Views/EntityReferenceFilterViewsResultTest.php
+++ a/tests/src/Functional/Views/EntityReferenceFilterViewsResultTest.php
@@ -2,8 +2,6 @@
 
 namespace Drupal\Tests\entityreference_filter\Functional\Views;
 
-use PHPUnit\Framework\Attributes\Group;
-use PHPUnit\Framework\Attributes\RunTestsInSeparateProcesses;
 use Drupal\Tests\entityreference_filter\Functional\EntityReferenceFunctionalTestBase;
 
 /**
@@ -11,8 +9,6 @@
  *
  * @group entityreference_filter
  */
-#[Group('entityreference_filter')]
-#[RunTestsInSeparateProcesses]
 class EntityReferenceFilterViewsResultTest extends EntityReferenceFunctionalTestBase {
 
   /**
reverted:
--- b/tests/src/FunctionalJavascript/EntityReferenceFunctionalJavascriptTestBase.php
+++ a/tests/src/FunctionalJavascript/EntityReferenceFunctionalJavascriptTestBase.php
@@ -2,7 +2,6 @@
 
 namespace Drupal\Tests\entityreference_filter\FunctionalJavascript;
 
-use PHPUnit\Framework\Attributes\Group;
 use Drupal\FunctionalJavascriptTests\WebDriverTestBase;
 use Drupal\Tests\entityreference_filter\Traits\EntityReferenceFilterTrait;
 
@@ -11,7 +10,6 @@
  *
  * @group entityreference_filter
  */
-#[Group('entityreference_filter')]
 abstract class EntityReferenceFunctionalJavascriptTestBase extends WebDriverTestBase {
 
   use EntityReferenceFilterTrait;
reverted:
--- b/tests/src/FunctionalJavascript/View/EntityReferenceFilterViewsResultJsTest.php
+++ a/tests/src/FunctionalJavascript/View/EntityReferenceFilterViewsResultJsTest.php
@@ -2,8 +2,6 @@
 
 namespace Drupal\Tests\entityreference_filter\FunctionalJavascript\Views;
 
-use PHPUnit\Framework\Attributes\Group;
-use PHPUnit\Framework\Attributes\RunTestsInSeparateProcesses;
 use Drupal\Tests\entityreference_filter\FunctionalJavascript\EntityReferenceFunctionalJavascriptTestBase;
 
 /**
@@ -11,8 +9,6 @@
  *
  * @group entityreference_filter
  */
-#[Group('entityreference_filter')]
-#[RunTestsInSeparateProcesses]
 class EntityReferenceFilterViewsResultJsTest extends EntityReferenceFunctionalJavascriptTestBase {
 
   /**